The new Terra 6.1 is pretty good at doing user testing as well via computer use, going through all the features and noting any bugs or inconsistencies.
It feels like we might be on a trajectory that takes us to a place where someone can just say "I'm bored, make me a new game" and then provide minimal feedback like "this isn't fun, make it better" and get an entertaining game without a lot of iteration. Of course we'll still have games that come from human ideas as well but vibe games seem like they're here to stay.
I'm not sure if this is a limitation of the tech or whether it will eventually have "taste" in such nebulous domains as "what is fun." They still can't write funny jokes despite trillions of dollars of training because even though there's plenty of funny material and discussions on what funny is, I guess it's still kind of a human thing.
That came from you. And it’s a deep thing.