I think there are a number of reasons for this, but a couple come to mind. First, pg seems distant from YC now (to those not at office hours, I guess), and rarely publishes new essays, so he's rarely discussed or present in the minds of commenters here. Also, pg has the fortune or misfortune to write in a way that feels like some LLM writing, when he's writing well. I haven't gone back to earlier essays to check this notion, but I think he's going out of his way to break up thoughts into less likely sentence fragments, now, which give his recent writing a choppier, less well-written feel, with standalone sentences like
> But you could recognize one from across the room.
and
> Or maybe not so lucky.
and starting a paragraph with
> For men, at least.
> pg has the fortune or misfortune to write in a way that feels like some LLM writing, when he's writing well.
It pains me to think how simplistic some peoples' LLM writing detection heuristics are (or at least appear to be). Prose such as in TFA is really obviously human-written to me. It's using those choppy sentences properly. It doesn't strike me as "less well-written" at all; the resulting contrast is clearly very intentional.
Although, of course, what you describe is still a couple levels above "Behold, what doth mine Ctrl-F espy but U+2014 EM DASH! Hie thee hence, O wretched automaton!"