I don't think AI is killing #StackOverflow; instead, it's the attitude of the users on there. I have seen many users attack people who ask questions. I see questions get downvoted because they are duplicates, or it's 'Why the hell do you want to do that?' When I see questions asked on Reddit or Discord, I notice that people are more welcoming and willing to help developers with their problems. I think that is because those platforms foster building communities. SO really dropped the ball there