Yeah, he's a thirteen year old kid, a minor. Wouldn't the parents had to have signed a release for his face to be shown like that? Don't these shows usually blur out the face of the minor? Anyone of the people he knows at school can see this. It will follow him around forever. If his parents allowed his face to be seen, that's beyond fucked up.
And as you said, there are obviously underlying issues. This kid might be bipolar, or manic depressive. No scare tactic is going to be long term effective against that.
Of course it's not long term. He could also just be a normal punk kid that needs a good lesson. And maybe he needs to be embarrassed
Why exactly is it more sensitive than the rest of the body?
More sun exposure, more hair, more precise senses nearby (smell, taste, hearing, sight, etc.). It needs to be sensitive to weed out any danger that might enter the body. Plus, the brain is only behind 3 defenses, with the skin being one of them.
So, you need a strict a security that protects the VIPs.