Sure, but making it possible for the neural network to make the movie (eventually in seconds) is somehow ok? So people can make their own private CG Mario films, as long as they don't try to sell them?
Here's my argument - even if the NN only makes the films for private consumption, eventually they'll be so widespread and fast at making them that won't matter, since everyone will be able to watch Mario movies of their own. Is that a future you think will sit well with Nintendo, Disney, etc?