If someone considers something to be uncool, and you do not, that does not mean that that someone is joyless, snarky, angry, or a douchebag.

Buuuut they, with the exception of Geekazoid, were being snarky. And mean. "A new level of douche-baggery"? "white people can’t dance. I’m embarrassed for all of them"? "they looked stupid… like a flock of chickens"? That's pretty hostile.

Also, it seems that at least a couple of the commenters are particularly concerned with appearances, so perhaps they'd like to know that they appear joyless.