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Though I note it didn't say "read comments by other humans", only "read comments by humans", so confirmed AI.
I think the guidelines here work quite well, and expect a good-faith interpretation, which they mostly receive.
I think you're asking for some sort of empirical verification of "this is / is not LLM text" (which seems impossible), but there's no real reason to expect the existence of LLMs to change that this website is, generally, interacted with in a good-faith way. People are really good at calling others out on here -- I doubt that will change.