Self inflicted violence, oh your poor tongue.
Your lack of concern for the players' safety, while not that unusual, pretty much sums up your dismay at the rule. I watch a tone of college football and that rule has not affected the game at all except for the time it takes to assess targeting. I think you are over-reacting and don't know how this is all going to work out any better than the rest of us.
I think there are plenty of players on the field that like a rule that protects them. The D players that are concerned are most likely more concerned about how it will be called instead of the intent. Of course there are those that can't tackle for crap and using their helmet is their first choice and they will either have to learn or learn to do something else.