I'm not the other commenter (and I believe you that it's not AI), but I'd guess it's mostly the first line: a short affirmation followed by "The problem is ...." feels like the sort of formula the LLMs love to use. (Not trying to imply that there's anything inherently wrong with it, of course.)

While we're at it, I'm under the impression that the recent LLMs have also co-opted "genuinely", which I'll never forgive them for—first they stole my em-dashes, and now they're stealing my adverbs too?!

Thanks for the explanation. Yeah, I use "genuinely" and "honestly" far too much; and often in odd places. It is a bad habit.

As to that comment's tone, my entire comment history is visible going back years. I'd invite people to peruse it.