Ban stupid kids for saying that something is "gay"? That's like 4 out of the 5 million players in WoW.
Seriously though, it bugs me too, but these are MMORPGS... lamers flock to these games like flies.
No matter how unfair that video was to Finnish folks, it quite simply had me in tears laughing. But that probably has more to do with the outrageous 70'ies disco trippin' than the actual language.
English is actually not a very nice language, me thinks, I appriciate German more. (I'm also in the Germanic language tribe, so that might have something to do with it)