Regarding 1, I think a) a sizeable fraction of voters are not able to recognize AI-generated text b) many who notice don't care, or are willing to overlook it if the premise is interesting enough. (The latter is true for me, on occasion) Maybe we need a two-dimensional voting system: good/bad, ai/human. I think the second axis could cut down on meta-discussions over how much of the article was AI-generated.
If there is a great post on a topic and the author used AI when generating it, what’s so bad about that?