Why not have a VAR stoppage so they can count the playersNope. Defending this way is in fact how some underdog teams even nick 3 points off top sides. It's boring and frustrating to watch especially if your team is the one attacking, but this is football. Probably bothers us more because we are heavily countered by it.
Team A sets-up team to overwhelm opponent's box, Team B responds by defending with 11 men in the box, it's Team A's job and turn to respond.