In my experience, the Warrior Dash should have the highest quantity of Vibram wearers. It's the perfect side-show event for fad-chasing 20/30 somethings out for the next thing to FB/Twitter/Blog about. All for the sake of DeanK-esque glamour in the social media age. zzzzzing!
On a more serious note, the asphalt reality of a lot of these lemmings is sad (as noted above). Vibrams, to me, are protection for barefoot runners who run on rocks/trail/etc, and don't want thorns in their toes...
And lastly, to my bro "So WHAT?!?!":
I think you're getting a little carried away with your sarcasm and whining. Maybe you're new here, maybe you're not. Either way, Letsrun has a strong cynical tone to a lot of its discussions and it should be acknowledged and accepted by your participation that the practices and nuances of the running community beyond letsrun's competitive, mostly-objective scrope (ie. the RW readers, fad chasers, penguins, [a lot of] triathletes, etc.) are going to be made fun of every so often. The OP wasn't bragging about himself, and didn't even directly criticize the 280lb dude. I think he was just chuckling and sharing something that most of the LRC crowd would laugh about. Untie your panties, go for a run, and enjoy the show. CHEERS BROOOOOOO!