Unfortunately yes... I've seen this video. I barfed about six times... that's twice as many times as when I see someone bastardize a single 1911.
Could you imagine clearing a feedway stoppage in that monstrosity? They ought to paint "Zombie Liquidator" on the side and I bet the idiots would come out in droves to buy it.
Not only is it completely impractical, but they may have troubles with the ATF as one pull of the trigger sends more than one projectiles down range. aka machine gun.