It also depends what AI is used for.
AI can be used for so many aspects but not all of it would warrant disclosure. Maybe it was used to generate an outline for a story, which was then fleshed out by a human writer to produce the story and plot.
Or maybe it was used to create a game prototype to see if some concept was "fun". Maybe some new game mechanic or something to see if it integrates well in the world. If they prove successful then the code was re-written by programmers to integrate into the final game.
Or used to develop test textures used to create initial maps to test them out, then artists designed the final textures.
For those, AI was used, but it was just used to test concepts and storylines and other things to see if it would work, and likely those are AI uses most people wouldn't mind.
But if AI was used in place of artists, writers, creatives or programmers in producing the final product you purchase, then that kind of disclosure would be warranted.
It's like people using AI on the Linux kernel. Most people wouldn't have an issue with AI being used for the code reviews of patches. It gets a lot muddier when it's used to create those patches though.