I don't know what "skullfuck techno" is, but I think I get what you're saying. Dubstep shows usually play at more like rock shows. Has a very abrasive sound in some cases... Skrillex samples screaming and has songs that repeat, "I want to kill everyone," over and over for example.
I can see how a guy like him would come off as a douchebag when he's breaking shit on stage and doing stage dives, especially if you're expecting to shuffle around like a zombie listening to that....music....you posted.
Again, not really my thing, but I definitely go for the experience.