What a lot of nonsense. It was a clear red in the Oz/NZ game because that's the law.
He wasn't falling, he was already low when he took a shoulder charge to the head. Under the law that's a straight red now.
It's a shoulder charge because his arms were behind his body at the moment of contact.
https://www.world.rugby/video/426430?lang=enNot sure how trying to make a law to stop people getting brain damage is going to ruin the tournament.