No.
These players know the risks they take. Shit happens.
Do you want all players to wear bubble wrap and cages too? Players get knocked out from fights, take pucks to the face, take sticks to the eyes, take skates to the neck.
OK, this is an argument I disagree with.
"They know the risks, therefore, we have no obligation to take any kind of action to reduce the chance of injury." Nah.
There are a lot of people complaining that football has become too soft these days because they give cheap penalties for accidental contact with the helmet, or for hitting a quarterback just slightly too rough. But while that can be aggravating at times, ultimately the overall product is better because the best players are on the field, and not in the x-ray machine.
Obviously, you can't make hockey completely safe. Any measure you take, you have to strike the balance between too dangerous and too soft. And we can debate them ad nauseum forever. But morally, I can't get with the "eff 'em, they signed up for it" take. There are plenty of reasons to keep fighting in the game, but that ain't one of 'em. They're still human beings, and I'm not a heartless bastard with no soul.