The pedant in me wants to point out that Skrillex has been in multiple rock bands and that LMFAO are already broken up (also terrible, but that's a different matter entirely!)
Thanks. We know he's been in bands, it was just a funny parody video idea that came to mind due to the song fusing electronic and rock together, so we decided to make the electronic artists play rock. Some Skrillex fans definitely took it a bit too seriously though.