People who crave karma points will continue do so. The game isn't for the faint hearted. SO still has the best gamification model and there isn't any competitor.

Does it, really? I have a few thousand points over there but I just gathered them from my work related issue solving. I never dedicated time just to solve SO questions and I doubt the people who do are plentiful enough to keep the website going. Most answers I see are posted by accounts with less than 10k reputation which really isn't hard to get. I doubt the "grinders" will keep the website alive if everyone else will move to LLMs.

It’s not cool to feed ai and there are no points for doing so. Ai feeder communities will die eventually

Even the best gamification model is not worth very much IMHO.

Theoretically the super intelligent ai will connect your question to the open source repo it read on GitHub. So you will get the answer anyway.