That there has always been terribly-rendered dreck on the Internet. Badly-written copy by semi-literate self-appointed "authorities." Kitbashed plagiarism that only half-understood its sources. Conspiracy theories galore from garbage-minded gasbags. Totally muddle-headed hot takes. But it was
manually generated. Or semi-automatic at best (like bad machine translations of foreign language sources).
The issue with AI is the fully-automatic engines behind the process. It's not that bad web pages are unique in history. What is unique is the sheer volume and velocity of drek that is being and will be produced.
Combatting this will need technology to, in effect, provide a mark of authenticity. "This was created by a human," in effect, and, more specifically, "By this [human|set of humans]." Contrariwise, "This is a product of system X."
Of course, people will lie and claim their AIs didn't ghostwrite their content or create those images. So against authorship and identities there will be an increasing need to rank authority/authenticity/veracity.
Not all AI-generated content will be horrible. And not all human-generated content will be trustworthy. There will need to be a way to mark reliability based on community-oriented standards. For AI-generated content (and human-generated content too) there will need to be ways to cite sources.
This will all become highly politicized, commercialized and gamed.
Yet if we don't work on such standards, we will continue to be beholden to hidden search engine algorithms of trustworthiness. Why did something get to the answerbox or SERP1? Was it simply through keyword packing? Or did whatever author behind this — human or machine — actually know (or at least seem to know) what the hell they are talking about?
There will need to be Internet-wide ways to create community-oriented ratings. Thumbs up and down.
Maybe this is a popular page with the public. But actual professional astronomers see this as factually misleading.
Maybe this page is popular with political faction X. But others point out it is rife with factually incorrect conspiracy theories.
Just like there are now "community notes" on Twitter (X), the whole Internet needs the equivalent way to ascribe qualitative judgments on any arbitrary page.