Injuring players waters down the sport?
I'm not saying players should be allowed to kill one another, but injuries come with the sport, and players should be ready for the dangers that come with football. Heck, these restrictions can cause more injuries to the defensive players, when they're ducking trying to prevent helmet to helmet and end up injuring their own head and/or neck. Furthermore, the NFL can't even correctly interpret its own rules regarding whats legal or illegal. Until they do, the NFL shouldn't be making new rules. Instead, just enforce the rules they already have.
All helmets in the NFL have to meet specific guidelines, huh?
The team's organization buys the helmets, not the players.
Yes the league is under contract through Riddle, I believe, but players are given options between what helmet to choose. Most of the time they just pic what's the most comfortable instead of what is the safest. Source, video below about 6:13 in.
http://www.nfl.com/videos/nfl-network-playbook/09000d5d81b75bc6/Playbook-Were-some-hits-legal