Ask HN: Are AIs gonna get dumber?

I'm not much of an AI kind tech guy, but I've been having this question for sometime: content on the internet these days are just full of AI generated stuff. I'm not saying that would definitely be a problem, but won't LLMs get more and more overfitted if that's all they have to eat in the future?He would not likely grow up to be a nice kid if the only food he eats is produced by himself.Am I right? Did I get anything wrong here?