Yeah, after the Hamlin ejection the other night, this is totally baffling? Why is the guy who led with his shoulder and hit the shoulder of his opponent, ejected? But the guy who leads with his helmet and hits the opponent squarely in the head, not ejected?
For this rule, the NCAA has it all-over the NFL. Any hit is reviewed by the Replay Booth and they make call, and a Head-to-head hit is an automatic rejection. It is consistent and, while severe, clear and fair. And it puts the emphasis of player safety. Everything the NFL does not accomplish.