What I saw in this video was like looking back 30 years and it made me happy. You're underestimating our kids to think we can't let them loose for a good game of bullrush and they are more aware that they are being watched than actually just playing the rules of the game. Also remember that Rugby is New Zealand's national sport and these kids grow up watching it and knowing the rules. I'd bet some of those kids end up in the All Blacks.