It's so unusual a thing to do that it becomes clever for that reason. Maybe other things too—I haven't looked. But I'd say it passes the "interesting new phenomenon" test (https://news.ycombinator.com/newsguidelines.html). Small things can do that as easily as big ones, if not more.
From the HN guidelines:
Please don't complain that a submission is inappropriate. If a story is spam or off-topic, flag it.
You should install it and then try reading your own grumpy comment again. See?
It takes the grumps out of HN and replaces them with cuties!
your comment can be said to be grumpy also. See?
sorry i dont get why people are salty, I dont find it interesting and just wondered what people found interesting. Why do you have to get defensive?