What's changed isn't that becoming harder, it's that hosting websites which don't need any understanding of html/css has become hugely easier and therefore done by far more people, including less tech-savvy people.
Somehow you're seeing that as a bad thing, focussing on the fact that the number of websites that are set up with the operator using html directly to create each page has decreased from 100%, but that's not actually a negative it's just the side effect of the positive changes!
(Sure there are some specific situations where a person who would be capable of using raw html chooses to use a CMS or something that does restrict them, but it only restricts them if they don't care enough to choose one of the millions of simple options for not having that restriction.)
Try to notice that your glass is more than half full, and that it's never been easier for anyone to create a website with the choice of manually writing hrml or not!
