Unless it only reconsumes the “good” content. In other words, the stuff that got good reactions from humans. In which case, it will get better, not worse, at least at generating clickbait. But at least it will be coherent clickbait.
This will not work, its too soon.
https://i.imgur.com/B2cHXRA.jpg
To me this implies that things such as "sarcasm" is a pattern simple enough for an AI to match - and that should go both ways, whether it's being generated or recognized.
If you're arguing that it won't be able to detect the more subtle sarcasm, then yeah, sure. But, well, Poe's Law predates GPT.