I think there's a lot more than just that, but I think part of the problem is that you just get an uncanny valley feeling. All of the phrases and rhetorical tricks that these tools use are perfectly valid, but together they feel somehow thin?

That said, some specific things that feel very AI-y are the mostly short, equally-sized paragraphs with occasional punchy one-sentence paragraphs interspersed between them; the use of bold when listing things (and the number of two-element lists); there are a couple of "it's not X, it's Y"-style statements; one paragraph ends with an "they say it's X, but it's actually Y" construct; and even the phrasing of some of the headings.

None of these are necessarily individually tells of AI writing (and I suspect if you look through my own comments and blog posts on various sites, you'd find me using many of the same constructs, because they're all either effective rhetorically, or make the text clearer and easier to understand). But there's something about the concentration of them here that feels like AI - the uncanny valley feeling.

I would put money on this post at least having gone through AI review, if not having been generated by AI from human-written notes. I understand why people do that, but I also think it's a shame that some of the individual colour of people's writing is disappearing from these sorts of blog posts.