Alright then in order:
1. His artstyle looks exactly like every piece of generic AI prompt I've ever seen.
2. The skintight stuff AND the gloss is what gives it away, especially on that full body shot.
3. I never said it had to be realistic. You just added that in because you felt like it.
Bonus: For a game containing a single character the art is incredibly inconsistent and the writing is shite.
AI isn't all bad, if you don't have artistic skill or need placeholders it's great for that.
TwistedScarlett is great at using AI and putting their own art in as well with decent writing.
A game called Artifact Seeker which isn't a porn game is a really good Rougelike that uses AI assets for the portraits.
I'm not blindly against AI, it can be useful for stuff like this, at least as placeholders.
However, number 4: If this really isn't AI then that's actually worse. Lmaoooo~

Congratulations.