This is one of the things about which I feel like sometimes is a burden... frameworks.
They can easily become heavy and most of the time you stumble upon simple websites using angular( and not only ) for a 1-2 page website.
And let's not bring Wordpress with poorly made themes to the table, it is just too much.
I would even go as far as saying that it somewhat pollutes the internet, I found myself on a limited data plan and had to pick websites which I could visit in order to meet a daily cap of data usage.
Despite the fact that many use frameworks or some sort of CMS, many have lots of uncompressed images which eat a big chunk of the loading speed.
You could go as far as saying that each website hosted somewhere in the world, behaving a little bit "slower" eats up more electricity than a proper designed one.
And not only websites, this one goes for native apps as well.
Many things could be disputed on this topic, but with everything aside from a UX point of view, the slower, the worse.
Especially if we are talking about an ecommerce platform.