Great take David!
Before the current targeting mess, refs called personal fouls for improper hits when warranted. Asking refs to make the same kind of decision regarding ejection, especially with reply reviewing the call, is not too big an ask for the refs.
When a ball carrier drops his head at the point of tackle, and helmet to helmet is incidental, no kid should be kicked out of a game.
Cincinnati at Indiana. Incidental contact with the QB led to the Hoosiers best guy on D being thrown out and completely changed the calculus and outcome of the game.
The rule is being reviewed but I expect no change before the 2022 season.