For many writers and creative types I've read and talked to, the use of AI for pretty much any reason is equivalent to crossing the picket line.
When so many models are trained on illegally-obtained data (libgen, etc.) and provide profit without acknowledgement to the folks whose creative output made said profit possible in the first place, it feels really icky to put it lightly.
What's more, the creative process is about pulling something out from inside of you, examining your ideas and yourself, and maybe showing it to the world. Feedback from others, editors or readers or whatever, is a reciprocation of that. Or if you keep it to yourself, you've learned and grown anyway, and have honed your craft for the next time you try it.
What reward is there in computer mimicry? How does AI empower this process?
From a commercial aspect it all sucks. Creatives are devalued and the creative process is arrested. This isn't new, though. Ever since we started calling entertainment "content," you could see it coming. It's a struggle Hollywood's faced since the studio system, even before. We had the subversives in the Code era, the new wave people, the auteurs, and so on, all fighting that good fight against the business people who spoke only in dollars and cents. So it was, so it shall be.
I don't think there will be an AI takeover in creative writing, except for maybe a hiccup where slop content creators chase gold. Already a couple of romance writers accidentally published stories with prompts left in them and have instantly ruined their reputations forever. I think the people interested in reading what a machine wrote are the people interested in making the machine write. Everyone else wants something from a real human.