Indeed. As a rule of thumb, anything that goes mainstream turns into crap soon thereafter.I've been using the Internet since almost the beginning. And it has turned into crap.
The kinds of quality people who made the Internet not-crap back in the day are still there, though. They're just occluded behind the throng of noise-makers.
If you can find them on the IRC channels and special-interest forums (like, say, SB) and spend your time there, you'll be happier than if you just binged ad-riddled tripe.