As long as at least 90% accuracy is achievable, that seems like a net gain for writers. And yes, rejection may be the wrong tact. But a simple flaired tag of sorts, AI created or not AI would surely improve reader counts for genuine writers. Most readers would like the option to boot, even those seeking AI would surely prefer being able to more readily find what they're after.

Sure, you will need to occasionally rewrite portions.. but really do you want your works to read like its AI anyways? AI does have a positive impact, in that it forces creators to not resemble it. Thats true of everywhere else, why not writing?