First, if you're going to b*tch about something on another website, at least provide a link.
Second, while I think you may be going overboard, you do have a point. I'd imagine a good percentage of posters here are snowboarders or hybrids, so I don't know why Epic would post something that could alienate them. Maybe it posts skier jokes, too, but I don't see any after a quick search.
It would be one thing if there was regular banter between the groups here. But between the surprising number of old-timers that post here, acting as if it's 1986 and boarders are a nuisance invading their turf, and the fifth-rate, inactive snowboard section that's fairly outdated itself, I don't see any reason to post an unfunny, circa 1992 joke like that.
Why not poke fun at yourself then:
What do you call an Epic poster in a two-piece suit?
An open-casket funeral.