Or we follow Occam's razor and accept that a random guy whose comment looks like AI in a tech forum discussing AI is not an advanced scribe following a certain school of writing, but rather some vibe coder who AI-optimizes their comments.

Both my computer and my phone replace two dash symbols with an em dash, and have been doing so since well before the invention of AI.

The GP’s post history suggests they have some touch with typography.

This is HN. We’re not typical people. Quite a few of us have been consistently and deliberately using em dashes for a long, long time.

Please face it: especially on a site like HN, you will encounter em dashes from real humans, whether converted by some system software or typed deliberately.

Em dashes are a weak signal at best. On HN, they’re a very weak signal.

You didn't spell any words wrong!!! That's so obviously AI slop you're posting. What a hypocrite! At least activate a skill that randmly misspells words to mask that you're using AI to complain about other people using AI.