And if you can't think of anything new? Maybe the creative fields aren't for you. The world doesn't need more writers. There are much easier ways to earn a living.
But I agree that a lot of people are copy pasting from chatGPT until it works
That doesn't mean you don't painstakingly labor over characters, story flow/pacing, events, meaning, etc. It just means you're never stuck with writer's block - though you might get stuck with storyteller's block, which AI can also provide suggestions to help push past.
It's also tremendously crappy and less creative. If all you want to do is an outline, just publish that instead of fattening it up with AI slop.
Also, your idea is great if you always want to be a terrible writer and develop your writing skills poorly, and just care about volume of output. IIRC, real writers say the writing part isn't actually the hard part, but for some reason that's what you want to automate. The hard (and creative) part is the thinking you have to do when you're figuring out what to write.
There are books I've read where I seriously wish the author just published an outline, with maybe a bit more exposition around world-building (yeah, they were sci-fi). And that was human written stuff, reading AI slop would an even bigger waste of time.
The process is outline, trash draft (who gives a shit who does this) then refine until you can't bear to read your work anymore and neither you or anyone you share the work with has critical points that don't have very solid counter arguments. Most wannabe writers have notebooks of worldbuilding and story arcs but can't even get the trash draft done.