Honestly what we need to do is establish much stronger credentialing schemes. The "only a good guy with an AI can stop a bad guy with an AI" approach of trying to filter out bad content is just a hopeless arms race and unproductive. In a sense we need to go back two steps and websites need to be much stronger curators of knowledge again, and we need some reliable ways to sign and attribute real authorship to publicat…
(And if that doesn't work, how is what you're suggesting meaningfully different?)