Whether McCaw has decided to "let it go" (read "get him back next time") is irrelevant.
My boys watch this game. Young kids model themselves on actions. Say what you like to them, spout all the high minded ideals you can wrap your lips around, but know this - its what they see getting DONE that is the big influencer here. They see that, they see nothing happened to the grub who did it and you can bleat til you're blind in the Juniors and Schools about Sportsmanship and Fair Play and you may as well go fart in a field for all the difference it makes.
This incident, the Burger incident - both dirty, intentional, malicious, hot headed, ill-disciplined and dangerous. The consequences? Absolutely NOTHING. Yeah, great message. Brilliant administration of a high profile international game on the world stage. Hell of an example.