It’s not exactly a reward It’s still 10 minutes without a player, then the rest of the game with 16 players. It’s more like not being punished as hard instead of a reward. And when the other option is just knowing that a team will lose and the game being a waste of everyone’s time, I prefer my option.
Also how many king hits have resulted in send offs recently? Let’s use an example that actually happens. A team shouldn’t be punished as hard as they are for an unintentional high tackle or bracing for contact. The player who did the thing will be sent off and suspended.