That's only relevant if the noise gets filtered out. I think there's a lot of evidence that our most prevalent platforms filter content for how much attention it can hold: which is to say, for revenue or less pure motivations. This is probably considered "quality" content, by some incredibly cynical metric of quality, and maybe the adoption of that cynical approach is the underlying change that has occurred on the internet in the last twenty years.

the Internet is now being used by 4 billions people, so it basically mimics humanity

Back in the 80s and 90s you were cherry picking the elite and the intellectuals, the internet of back then was never going to be representative sample of humanity