Related discussion What AI did to stackoverflow in a graph (483 points, 3 months ago, 595 comments) https://news.ycombinator.com/item?id=48956949
But to be honest I expect that would have just delayed its death. AI is so good now I think I'd use it even if Stackoverflow was really friendly.
My attempts at discussing AI related questions with AI itself have been pretty frustrating, especially in the early years, since they are either just uninformed about what's currently going on in the AI space or recite random blog posts of questionable value, often they couldn't even tell what they themselves are capable of.