Why not have all new questions include an automaticautomated answer by an official Stack Overflow ChatGPT account, with a clear indication that this is the ChatGPT response? Maybe even show the user the ChatGPT answer before the question is posted, to reduce duplicate/low-quality questions.
This way, it just gets the ChatGPT controversy out of the way... ironically, by embracing it. If the answer works, then great. If it doesn't work, well now at least there is a Stack Overflow sanctioned answer written by ChatGPT to compare new answers against. But if there's already a ChatGPT answer, why would someoneanyone answer it with another ChatGPT answer?
If the problem is users abusing questions with quick, low quality answers... well that's the problem then, witha different problem; those users, who will always exist.