Earlier quoted context omitted.
> I'm not affiliated with the rationalist community, but I always interpreted "Less Wrong" as word-play on how "being right" is an absolute binary: you can either be right, nor not be right, while "being wrong" can cover a very large gradient. I know that's what they mean at the surface level, but you just know it comes with a high degree of smugness and false modesty. "I only know that I know nothing" -- maybe, but…
Sometimes people enjoy being clever not because they want to rub it in your face that you're not, but because it's fun. I usually try not to take it personally when I don't get the joke and strive to do better next time.
I do get the joke; I think it's an instance of their feelings of "rational" superiority.
Assuming the other person didn't get the joke is very... irrational of you.