lots of questions here, and if I do justice to all of them properly that will be several posts, but let me try. This is my personal opinion obviously:
Curation bot comments: I don't like them. I think they are spammy and they make my contents comment section ugly. That said, I don't vote them. Since hive is decentralized I can't control them either. So I have decided not to care.
I am against AI to assist text writing in general as they are not original
Art is a difficult subject. As you have said AI art is "uncopyrightable as intellectual property". This has been decided. So people can use it, even without citation, and there is nothing wrong or unlawful about it. Again, to be it is all about reward, do I vote such a post that only has AI art in it. I don't. If it is mixed with some original content, depending on content I might. I often do.
I am aware of AI developers. At hive, as a content generation tool I personally do not support them