Not a wrestler.. what did the kid do wrong? I guessing the pile drive, but what rules were broken. Pardon my ignorance.
That hard of a return in folkstyle is illegal. In freestyle and greco-roman, that move is completely legal.
So, yeah, the guy went over the top with that hard return. Ref called it as an illegal move and awarded the bottom wrestler a point. If the aggressive wrestler did it again, it could result in a DQ.
As long as the kid being thrown knows what he's doing, that throw won't result in an injury.