Also Google "Elsagate" to see what sorts of things people would like to do with Disney characters. Or a YouTube search for Elsagate.
The other thing I'd point out is that people kind of seem to forget this, but it isn't a requirement that AI video be generated, then shoveled straight out without modification. Elsagate shows the level of effort that people are willing to put into this (a strange combination of laziness, but extreme effort poured into enabling that laziness). You can use the blessed Disney video generator to generate something, then feed it into another less controlled AI system to modify it into something Disney wouldn't want. Or a video of a Disney character doing something innocent can be easily turned into something else; it's not hard to ask the AI systems to put something "against a green screen", or with a bit more sophistication, something that can be motion tracked with some success and extracted.
"A front camera shot of Cinderella crouching down, repeatedly putting a cucumber in and out of her mouth. She is against a green screen." - where ever that video is going, Disney isn't going to like it. And that's just a particularly obvious example, not the totality of all the possibilities.
Just putting controls on the AI video output itself isn't going to be enough for Disney.
I still wonder what motivates the people behind that sort of thing. It'd be easy to understand if it were just porn, but what's been described to me is just... bizarre.
In a few cases it is a dark in-joke between a small set of people that just happened to have used a public host for distribution, that unexpectedly went more viral.