Banning AI generated content works just fine, and arguing otherwise is nothing short of FOMO.
As a random example, AI generated content is banned from the /r/ProgrammingLanguages subreddit and any regular visitor that _isn't_ suffering from AI psychosis/FOMO will tell you it's for the better. In general it's not that difficult to moderate for it either as AI built projects consistently contain the same patterns _over and over_ such that 98% is easily detected.
As a random example, AI generated content is banned from the /r/ProgrammingLanguages subreddit and any regular visitor that _isn't_ suffering from AI psychosis/FOMO will tell you it's for the better. In general it's not that difficult to moderate for it either as AI built projects consistently contain the same patterns _over and over_ such that 98% is easily detected.