Exactly. Completely agreed.
It wouldn't be appropriate to post, say, a Haydn string quartet in the "share your work" forums, because it's not your work. In exactly the same sense, it doesn't make any sense to me for someone to post an AI-composed piece here, because it's not the poster's work. What would be the point? Best case, you fool people into thinking it's your own work. What then? People give you feedback, assuming you wrote the piece, and that feedback is totally useless to you since you didn't, in fact, write the piece. I suppose maybe somebody will say, "Good job," to you, and OK, congratulations, you tricked someone into praising you. (Though, I must say, to date, I still have not heard an AI-composed piece of music that I thought was anything better than mediocre).
This is exactly what I can't understand. What would anyone expect in response to a piece of AI-generated music? Sure, I could pretend that a human actually wrote it and write a critique of it based on that fiction, but I can't imagine why I would ever do that, nor can I imagine what use that would be to the person who posted it.