Creator, or proof reader ?

LLM output is, by definition, a random text that is statistically indistinguishable from "what they say". You can't tell true from false on that level. And it's worse than random BS from the proofreading POV - you can not rely upon "it sounds wrong" feeling to catch the likely spots.

As far as I'm concerned, anyone caught at using that deserves the same treatment as somebody who engages in any other form of post-truth - "not to be trusted ever after in any circumstances".