I used to be able to tell if art was AI. right now I cant tell because I cant pick on the techinques used by artists that artist themselves pick up on. but I do can tell if it is AI the more images i am exposed to. the lack of artistic consistency is one thing AI have yet to catch up on. and even more so. the lack of cheating techniques in order to save time. yes i am talking about basic things like a whole static image whose changes are only facial expressions. dicks bending in impossible ways because it is easier to draw a bent dick than to rotate the hip for a more accurate penetration. shit like that.
also this is a personal choice but I see AI art and i am +40% more likely to drop a project after checking it out.