Posts here and on stacker news read as real to me. I could always be wrong though.
Discussion
Look at his main feed, it’s very formulaic. I don’t really think he’s a bot, but the interrogatory responses are sus too.
It's not natural but I think it's a posting style they're attempting. I see too many posts that break into a more natural form of language and say things I wouldn't expect a bot to say, but everything is evolving rapidly.