Earlier quoted context omitted.
Yes, fifteen to twenty years ago, it was used to refer to the emphasis on user-generated content and the generalization of social media.
What is a regular personal "Web 1.0" website other than "user generated content" though. If anything, "Web 2.0" was the perversion of the original WWW idea by "big tech". We already had the "decentralized web" for a few golden years before the bean counters discovered the internet.
It wasn't user generated. User in this case being the visitor to a website and not its creator.