Edit: okay, deep fake. That's bad. The title is the problem for me, then.
Sorry, what's the actual problem with users creating fantasy porn? How about they ban all traditional drawings apps and photo / video editing apps, then? Those can also produce nudes. Oh, and browsers also. And text editors.
This is a weird pattern because Apple can't listen to its own power users (of macs). Tim Cook is criticized by them for caring only about money. Yet he still is on the purity train. Yeah, it's probably all about their stock holders.
After reading more than just the title, the problem has hit me in the head: these apps can create deepfake porn, which is not that much "fantasy" anymore.