No argument from me, if it was for flagrant hits only I would be OK with it but for any shot to the head absolutely not.
He's leading with his helmet. If he clocks the guy with his shoulder, of even with his head if there is some indication that he was trying to wrap the guy up and make a textbook tackle, he'd be ok. I understand why this bothers a lot of people. But the game is evolving into something closer a lacrosse/rugby hybrid. You just cannot sustainably run any kind of entertainment business when there is a significant chance that at any given moment a fair portion of your talent isnt going to be capable of performing.