I think you're going to see a very rapid pendulum swinging here. With an absurd amount of content being generated and then flooding the various platforms, and in turn platforms are going to try and combat this by creating more centralized sources of information. The return to analog knowledge seems a bit far-fetched. I highly doubt that would be an outcome, if only because convenience trumps it. Look at librarians, you can talk to one and get much better direction of information than asking google, but few people do that. I can't see that changing.
And all of those models have been indiscriminately trained on the sum total of that pure noise. What you are getting from these models is a cleaned-up, grammatically-perfect, auto-editorialized synthesis of that pure noise.
AI algorithms can generate 'noise' at a much faster rate than people can, so it will be even harder to find the hidden gems.
I learn from the 1% of material that is created by humans who are, to some degree, experts in their field.
Sometimes it's also wrong, but it's not because they were just lazily regurgitating rando 'net posts.