Trine 4 is great.

Trine 3 is so skippable even the devs skipped making the second half

That sounds worse than a complete AI art ban. If you’re an amateur dev with an idea, some programming skill and zero budget, you can’t use AI art to make your game look a little better than all the crappy asset flips. But if you’re a big studio with a portfolio to train the AI on, you can cut 90% of your art team to use mostly AI. Indie devs lose, artists lose and big corps win, as usual