DONTTELLTHEPX - yes i take your point but there is still a cabin secure issue if this boy had an aisle seat and then had to have his plastered leg protruding in the aisle for the whole flight. Those girls would have totally mangled his leg for a start when the trollies were out!!
But seriously I do think there is a lot of onus not only on the boys guardian, but alos on the check in agent responsible. All too often I am presented with a pax at the a/c door who is obviously not fit for travel due alcohol. This I think is a similar situation, but this doesn't excuse the cabin staff and the captain for their words/actions if the paper is to be believed.