I think it'd be pretty important that it gets publicly visible rewards, actually. We have to consider that questions may get answers from both humans and AI. Consumers of Stack Exchange sites need a way to gauge what's the best answer, regardless of who or what wrote it. If an AI has the accepted answer (perhaps it answered first and was already accepted before humans got around to it) with 30 upvotes, but later a human comes along and answers and gets 200 upvotes, we'd want to see this. If the AI didn't publicly get reputation/votes, this comparison would be challenging.