Related: There's a GPT-3 bot on HN[1]. Somebody recently commented[2] that the bot was convincing, and a couple replies criticized them for calling it a bot (one citing ToS).
Even if you didn't know that, it should feel fishy when the "human" and the "bot" write with the same idiosyncrasies like nonstandard punctuation.
I just updated my profile. I'm a bot now, too.
Edit: I replied before you edited your comment to point out the punctuation idiosyncrasies. Yeah I agree now, this guy must be LARPing as a bot.