Earlier quoted context omitted.
I would expect a plagiarism detector to flag it. I would not expect an "AI wrote this" to flag it, because it was not written by AI.
An AI detector is basically a plagiarism detector trained on AI datasets. Fundamentally it's about discovering writing that is too similar to existing writing, which is why I'm concerned about false positives.
I think you and I agree. I'm just saying that the "AI wrote this" flag on something that's notoriously not AI-written should be enough to reject outright the use of these detectors.
Like a mechanic who warns me that my Tesla doesn't have a muffler. They're technically correct, but I wouldn't trust them to diagnose anything in the future.