Its brutal. Not to sound like Don Cherry, but I miss the hockey that I grew up with. Subban would be made to answer for his cheapshots in the form of a fight. Nowadays these guys can het away with anything and that's why you see these insane slashes and hits from behind. There is no physical punishment to deter this garbage. It makes me sick.
It was never a deterrent anyway, it still happened, otherwise you'd say, "I miss old time hockey when this never happened and there were never any fights because the threat of a fight was enough to stop cheap shots."