I really don't know how I'd feel if a movie or actor was entirely AI.

We've already had some instances, like Tarkin in Rogue One. Felt a bit ok because the actor was dead and they wanted to reuse the same character. Though, I didn't see a reason the character had to look the exact same. A recast would have been perfectly fine.

But an entirely new character as AI? Feels like taking the easy and cheap way out. At the same time, actors, animators, and everyone else surrounding the production are kind of a byproduct of trying to bring a vision/story to a medium. I think I'd look at something that used AI to that degree as a lesser product, even if I like the resulting movie. Something that just uses AI as a part of the whole movie making process though? I don't think I have a problem with that.