I do agree that new features were needed for new functionalities, such as games or actual apps, but the irony makes it that we are discussing this on a site used by millions, a site which doesn't use all those fancy frameworks and features. I was mostly referring to the average site created today, be it either by devs or directly by clients using some CMS like WordPress.
Don't get me wrong, I actually used and love(d) React, but it feels like in the majority of cases the library is misued and people just create normal sites (that could have existed 15 years ago, but a loat bloatier) instead of creating the apps you were referring to.