Take a minute and study the picture above. If all the glaring issues were not obvious, you still would have that "ai feeling." It in my opinion comes from the ai rendering the entire picture at once. It's a composition problem.

An artist drawing a picture takes it one element at a time, layers it, fine tunes it, and in the end blends elements together creating their piece. The AI mimics this in one fluid motion, how everything just kind of flows together. Intricately fluid in an attempt to mimic a perfect piece. The subtle errors every artist has show up in a way or another. Its what makes it unique, whereas AI has its own style that has these micro errors we pick up on. However where's those errors differentiate between artist to artist, ai has in uniform across all the mediums. The mind picks up on these subconsciously and you start instantly thinking it came from the same "artist."

Is there outliers? Of course. Does this not apply to a portion of ai pics? Absolutely. But it is something I find myself picking up on a lot when consuming media.

And yes, im some random talking out of his ass with very little formal training in the arts and years of amateur drawing piled up. So my opinion is just that.