Tbolt, You have to understand he is judging from the vast knowledge and experience gained by living in the US and being a teenager. In short he really thinks he has perspective from the position that most teens, including us at that age, think they really know something or almost everything. It allows him to cherry pick, ignore comments and rant from a position of superiority.
He thinks the rest of us are

and therefore of no consequence in spite of the experience(s) life have provided.