Am I sounding like a hyper-critical, cruel, rude, know-it-all? Hope not. But I freaked out when seeing the following code online. Would appreciate comments, suggestions, solutions to correct my assumptions/observations below.

Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>temporary bios test page</title>'
<!-- PageID 13628 - published by Open Text Web Solutions 10.1 - 10.1.2.321 - 35513 -->
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<link type="text/css" href="/styles.css" rel="StyleSheet" />  
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<style>      </style>  
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<style>.serif { font-family:"Times New Roman",Georgia,Serif; }</style> </head>   
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            <ul class="navigationContextual">    <li>> . . .</li> </ul>
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    <!--*****BEGIN MAIN CONTENT AREA*****-->
        <div class="mainContent">
         <ul class="navigationAncestors">    <li>/ . . . </li>   </ul>            
<h1 class="subHeader" id="printHeader">temporary test page</h1>
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            This page is being updated. More to come.
       
<p><strong><span style="background-color: #00ffff;"><span style="background-color: #ffffff; color: #0000ff;">test page Biographies:</span></span></strong></p>
       
<p><span><span style="background-color: #f0ffff; color: #0000ff;"><strong><span style="text-decoration: underline;"><span style="background-color: #ffffff;">Firstbio Person<br />
        </span></span></strong><span style="background-color: #ffffff; color: #000000;">I received . . . from . . ... .</span></span></span></p>
        <p><span><span style="background-color: #ffffff; color: #000000;">My advice . . . career.<br />
        </span><span style="background-color: #f0ffff; color: #0000ff;"><br />
        </span></span></p>
       
        <p><span style="text-decoration: underline;"><strong><span style="background-color: #00ffff;"><span style="background-color: #ffffff; color: #0000ff;">Secondbio Person <br /></span></span></strong></span>My name is Secondbio Person.  I received a BFA . . . ... Society. </p>
        <p>I currently . . . . my own design styles.</p>
        <p>My advice . . ..</p>
        <p>Please take a look  <br />
        For making . . .  <a href="http://...">http://...</a>  <br />
        For making ...<a href="http://...">http://...</a> </p>
       
        <p><span style="background-color: #ffffff;"><span style="background-color: #00ffff;"><strong><span style="text-decoration: underline;"><span style="background-color: #ffffff; color: #0000ff;">Thirdbio Person</span></span></strong></span></span><span style="background-color: #ffffff;"><span style="background-color: #00ffff;"><strong><span style="text-decoration: underline;"><span style="background-color: #ffffff; color: #0000ff;"><br />
        </span></span></strong></span><span style="background-color: #ffffff;"><span style="background-color: #ee82ee;">
<span style="background-color: #f0f8ff;">My name is BIO Person,. . . classes.  </span><span style="background-color: #f0f8ff;">My main goal . . . animation field.</span></span></span></span></p>
        <p><span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;">My advice . . . result, Google it!</span></span></p>
        <p><span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;">Some of the websites I find useful are:  </span></span><span style="background-color: #f0f8ff;"><a href="http://www.w3schools.com"><span style="background-color: #ffffff;">http://www.w3schools.com/</span></a></span><span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;"><br />
        This site . . .codes.</span></span></p>
        <p><span style="background-color: #f0f8ff;">
<a href="http://library.creativecow.net"><span style="background-color: #ffffff;">
<a href="http://library.creativecow.net/  ">http://library.creativecow.net<span style="background-color: #ffffff;">/  </span></a></span></a></span>
<span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;"><span style="background-color: #ffffff;"><br />
        This site . . .video content.</span></span></span></p>
        <p><span style="background-color: #f0f8ff;"><a href="http://www.javascriptlint.com/online_lint.php"><span style="background-color: #ffffff;">http://www.javascriptlint.com/online_lint.php</span></a><span style="background-color: #ffffff;">  <br />
        This website . . .</span></span></p>
        <p><span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;">Google.com  Trust me.... . .I rely on.<br />
        </span></span></p>

        <p><span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;"><strong><span style="text-decoration: underline;"><span style="background-color: #00ffff;"><span style="background-color: #ffffff; color: #0000ff;">Fourthbio Person<br />
        </span></span></span></strong>My name is Fourthbio Person, . . . .Design courses.</span></span></p>
        <p><span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;">I love ... ,. . .passionate about.</span></span></p>
        <p><span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;">My advice . . . enjoy yourself!</span></span></p>
        
<p><span style="background-color: #f0f8ff;"><span style="color: #0000ff;"><span style="background-color: #ffffff;"><strong><span style="text-decoration: underline;">Fifthbio Person<br />
        </span></strong><span style="color: #000000;">I have a BS . . .in nature-oriented activities.</span></span></span></span></p>
        <p><span style="background-color: #f0f8ff;"><span style="color: #0000ff;"><span style="background-color: #ffffff;"><span style="color: #000000;">My advice . . .enjoy.</span><br />
        </span></span></span></p>
       
<p><span style="background-color: #f0f8ff;"><span style="color: #0000ff;"><span style="background-color: #ffffff;"><strong><span style="text-decoration: underline;">Sixthbio Person<br />
        </span></strong><span style="color: #000000;">I received a BS and MS in ... . . . , ... courses.</span></span></span></span></p>
        <p><span style="background-color: #f0f8ff;"><span style="color: #0000ff;"><span style="background-color: #ffffff; color: #000000;">My advice . . .ask for help!</span></span></span></p>
       
<p> <span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;"><strong><span style="text-decoration: underline;"><span style="background-color: #00ffff;"><span style="background-color: #ffffff; color: #0000ff;">Seventhbio Person<br />
        </span></span></span></strong>My name is Seventhbio Person. . . . math courses at ....</span></span></p>
        <p><span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;">My interests . . .with analytical and problem solving skills.  </span></span></p>
        <p><span style="background-color: #f0f8ff;"><span style="background-color: #ffffff;">My advice . . . their majors.<br />
        </span></span></p>
       
<p><strong><span style="text-decoration: underline;"><span style="background-color: #f0f8ff;"><br />
        </span></span></strong><span style="background-color: #f0f8ff;"><br />
        </span></p>
        <p><span style="background-color: #f0f8ff;"><span style="background-color: #f0f8ff;"></span><br />
        </span><span style="background-color: #f0f8ff;"><br />
        </span></p>
        <p> </p>
        <p> </p>
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        <!--*****END STANDARD CONTENT PAGE*****-->
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</html>
The above is not from an individual seeking help or a small school. This is the output of a major USA university with several campuses and a large pool of resources (including Web-savvy staff, faculty, students, alumni). This particular campus prides itself in offering communications and 6 or more Website-design or Web-page-construction courses

How did such illogical, inaccessible, inefficient and flat-out incorrect (e.g., tag nesting) mark-up slip through?