HN's comment section new favourite sport, trying to guess if an article was generated by LLM. It's completely pointless. Why not focus on what's being said instead?
I also enjoy all the "vibes" people list out for why they can tell, as though there was any rhyme or reason to what they're saying. Models change and adapt daily so the "heading structure" or "numbered list" ideas become outdated as you're typing them.
I don't believe the story itself is made up by an LLM but I'd argue that if you have an LLM write your story then it's no problem for you to have it add a TL;DR at the top so we can skip the slop.