Hm, to be honest i too don't understand why is that command needed.
ever played the map "rally" when you have a jackass on your team? that's why it's needed.
Or you know, viewgibbing someone after they kill you 4 times in a row like Snipen does.
I watched a demo of some admin, I think it was someone from OTB, but they watched a speedhacker, and every time he stopped running and started shooting, he got view gibbed ... that's why I like it