When asked to comment by Kotaku, Cyan Worlds made the point that all of this went through human quality control, and even that much of the content wasn’t wholly, or even mostly, derived using AI. For example, the voice narration in the game was written and performed by human beings, but an AI tool was used to modify the audio of that narration for pitch, timbre, etc.
But in the end, the things about the game customers are talking about hating is the content that has been in some way touched by AI.
It’ll be interesting to see how we value creative expression by AI once it’s indistinguishable from a professional’s potential. In this case it sounds like the quality was noticeably worse and they have every reason to be upset with the result.