Fair. Your characterization of AI music is a bit ambitious. AI still can't write a breathtaking short story or poem: it can write a mediocre one of standard themes indistinguishable from a student, but that's it. I would argue that AI images is a special case: a photograph is after all not truly "art".
But how I read it, the second comment is saying that AI slop competes with machine-replicable human slop. Of which a lot of ambient music is, but not necessarily all.
Most ambient music boils down to generic muzak that was machine generated in the first place in a DAW.