"I'm guessing the kid would now get off with a warning because of his age and to avoid opening up a can of worms."
I would suggest if the kid gets off with a warning, that is what will open the can of worms, signalling to every other muppet out there that it's ok to attack a politician.
SHY even tweeted that this kid is her new hero, imagine the outrage from her and her ABC if it was her that got egged!