I'm not looking to make any excuses here, merely make an observation. I haven't made any detailed study of "shoulder charges" in general, but one fact stands out for me in the two videos shown here. In both these incidents the opponent is in the process of being tackled and propelled forward by a team mate of the "shoulder charging tackler". I wonder if, in the split second he has to weigh up matters, this moves "the shoulder chargers" thinking from "tackle" to "brace for contact". Just a thought.