His comment after the match sounds like something from Game of Thrones, love it.
Secondly, I personally like that kind of comment from a player. In my opinion it shows he has drive, self-belief, a competitive spirit, and hates losing, all good traits. Maybe it comes off a bit arrogant or sore loser-ish, but honestly who gives a shit, he was pissed they got knocked out and probably pissed at himself for his earlier red against Sweden (the same team which has in the player who kicked a ball at him like a classless idiot). People are only human and it's normal to be bitter sometimes, hopefully he learns from it and turns it into a positive motivation to not lose in future. Hopefully he also learns not to react foolishly when provoked on a football field.