I think there's a reason people would respond more poorly to generated art than to emojis: the contentlessness of emojis is broadly understood. We look at an emoji and we know what it is intended to signify. With "AI" art, there is an ambiguity: which aspects of the artwork are intentional, and which aspects are the creator accepting whatever the "AI" churned out?
If the art isn't critical to the game, then use simple art. It doesn't matter if the simple art is or isn't AI generated, what matters (in my opinion) is that it doesn't lead us into looking for meaning that isn't there.
> If the art isn't critical to the game, then use simple art.
However, complex art is needed to fit with genre tropes to attract the expected audience. It's like Apple shoving AI into their products needlessly—not a core part of the experience, but needed so Wall Street doesn't throw a hissy.
> looking for meaning when none is there
Or you generate your own meaning. Art is analysis for the audience.
If the art isn't critical to the game, then use simple art. It doesn't matter if the simple art is or isn't AI generated, what matters (in my opinion) is that it doesn't lead us into looking for meaning that isn't there.