There's a stereotype about young men... that they punch holes in the wall when they get angry. I understand the impulse, sure. Sometimes a good punch is needed to get out all the excess anger. But usually a pillow or a stray plank of wood is a good option for emotional release, not the drywall in your family home.
It's also important for children to learn the consequences of their actions. You can't let them run amok with no punishment or recourse, or else they will just keep doing it. Case and point: the boy who punched 6 holes in his wall. The mental state of the child notwithstanding, that's a lot of damage to a wall! Especially when you're renting. Everyone knows how annoying it is to get your security deposit back, even when you don't have an angsty teen in your midst. But that's exactly what happened in this situation, where an innocent man was left to pick up the pieces.