Similarily, a film director "just" gives guidance to a bunch of people: actors, camera operator, etc. Do you consider the movie is his creation, even if he didn't directly perform any action? A photographer just has to push a button and the camera captures an image. Is the output still considered his creation? Yes and Yes, so I think we should consider the same with AI assisted art forms. Maybe the real topic is the level of depth and sophistication in the art (just like the difference between your iPhone pictures and a professional photographer's) but in my opinion this is orthogonal to it being human or AI generated.
To be honest so far we have mostly seen AI video demos which were indeed quite uninteresting and shallow, but now filmmakers are busy learning how to harness these tools, so my prediction is that in no time you will see high quality and captivating AI generated films.
(1) https://artefact-ai-film-festival.com/golden-hours-66f869b36... Please consider liking it!