And that’s a huge problem as coaches have taught to lead with their helmet which hasn’t always been the case.
They will have to learn to teach differently but it's not clear if that means around the los or on the goal line, I really don't think this is going to affect the game as much as some suspect. These refs will know whether a player was intentionally using his helmet and specifically to make contact with another's helmet. Hell, I can see that watching the games on the tube.
Quite a few times tacklers will lower the helmet on a player already in the process of being tackled and that is apparent. What is karma is that most of the injuries I see are when they hit their own player who is in the process of trying top spear the ball carrier too.
I do not need blow up hits to enjoy the game because I appreciate a perfectly executed tackle a thing of beauty in the game. And one of the best we ever had was Newman his first few years because K State DB's are taught tackling skills. He was great at wrapping up but then something happened that changed the game, Roy OU Williams and the Jacked Up segment on ESPN and the NFL promoting those hits to entice viewers that want violence. Then he starter banging off ball carriers for the big hits and on several plays I saw the ball carrier bounce off and keep going.