Here's the thing, though: "AI", by itself, is pretty much meaningless. For decades, people have been using "AI" to refer to the programming controlling NPCs in video games, for instance. Sometimes, "AI" is used in a sense that covers any machine learning or neural network application. More recently, "AI" has caught on in the context of Large Language Models like ChatGPT that take a prompt as input and then use some minimization function over their corpus of training data to predict what the most likely response to that prompt would be. The broader class of software including LLMs and similar models that output images, sounds, etc., are called "generative AI". And because "AI" is such a hot topic now, anyone whose software product uses anything resembling a neural network is going to be sure to advertise it as "AI".
In my opinion, it would be better to use more precise language and, when we mean LLMs, say "LLMs". But I suppose that ship has sailed. In any event, clearly what is under discussion here is whether music composed by a generative, LLM-like software should be permissible here - and as I've said, I don't think it should be, since this is a composition forum and there's no sense in posting a piece of music you didn't compose.
But by the same token, if you composed the music, then of course you should be permitted to post it, regardless of whether you used tools that are advertised as "AI" to produce the audio mock-up of the music you composed.