I know injuries happen, but he said kids are dying. I'm not always plugged in, so I could be wrong, but I've never heard of a kid dying trying a wrestling move. Maybe some kind of choking while at school or something perhaps.
There are more than a handful per year of kids accidentally killing a friend or classmate with a wrestling move.
I was knocked unconscious by a kid in 5th grade who did a pile driver on me. Kids are doing sheet like that all the time. I found in a quick search a few instances of kids killing other kids with wrestling moves, so it does happen. It's rare enough though.
The injuries from wrestling moves by people who don't know what they're doing can be pretty horrendous tho. And those happen pretty frequently.