There is such a thing as a distinct LLM writing style that is not just good structure. Anyone who's read more than five books can tell that.

And the comment itself seems completely LLM generated.

That's not just false. It's the antithesis of true.

It's not just using rhetorical patterns humans also use which are in some contexts considered good writing. Its overusing them like a high schooler learning the pattern for the first time — and massively overdoing the em dashes and mixing the metaphors

It's true that LLMs have a distinct style, but it does not preclude humans from writing in a similar style. That's where the LLMs got it from, people and training. There's certainly some emergent style that given enough text, you would likely never see from a human. But in a short comment like this, it's really not enough data to be making good judgements.