It is AI-generated. I'm sure the author provided the prompt and liked the result, but it is the output of an LLM.
Evidence for this claim that you're making with absolute certainty?
This is HN, if the writing is not complete deadpan with a complete lack of whimsy, followed by a list of citations, it's AI generated.
Ok, so you are both lying about multiple things (the fact that it's AI generated and the way that people interact on HN) and blatantly breaking the HN guidelines. Got it.
That read like sarcasm to me tbh, your parent post.