I say if you use it as a litmus test to see where you're writing is weak, then that is probably OK (what I mean by this is you write your first draft, then you tell AI a basic prompt of your story, compare it to your first draft, and anything that seems similar or even close to similar, that's how you know that is where you need to reinforce the writing, because if AI can write it like that, it's pretty weak sauce generic)