I respond in ways like we did when Wikipedia was new: “Show me a source.” … “No GPT is not a source. Ask it for its sources. Then send me the link.” … “No, Wikipedia is not a source, find the link used in that statement and send me its link.”
If you make people at least have to acknowledge that sources are a thing you’ll find the issues go away. (Because none of these assholes will talk to you anymore anyway. ;) )