I've said more than once that no matter how much Ghibli stuff you train an AI on, it's never going to spontaneously come up with a Princess Mononoke or Spirited Away. People don't realize there's an aspect to creativity that dwells within the human brain and the morass of personal visceral human experience that can't be reconstructed and simulated from expression alone - it's a lossy process. And there's more to it than mere randomness and novelty.

That's why no matter how good AI gets, it's only ever as good as the human effort put into it. It's very good at being very technically mediocre.