Not completely surprising that AI could do well generating manga. It's very formulaic in general and by nature devoid of a lot of the relatable character development from most other writing. I have no problem reading an AI story if it's done well, but it typically just isn't. What I find annoying though is AI generated content that is only interesting if it's actually real. Like a historic photo or a video of some shocking event.
I’d be ok reading AI-written stories if it’s only “AI assisted” (I.e. there’s a skilled human driving it). If it’s just a prompt and then the AI does all the writing, I know there’s just no intention behind it as LLMs don’t actually “think”- they just (in a very sophisticated way) pattern-match against an existing corpus.
I’ve experimented using AI to prototype game ideas and inevitably once I succumb to the temptation of handing the AI the game design reigns it starts devolving to meaningless slop with a silhouette of a meaningful design. The only way to get something meaningful (that ive found) is for the human to stay in the driver’s seat.