If someone is being a jerk but you're better than them
So someone is being an @$$ and making stupid moves then blaming the rest of the team. You are obviously better than them. What do you do? The best way to make them learn their lesson is: don't save them when they make bad moves. They might rage, but just tell them that they are making bad moves and they might stop, as opposed to the usual "this guy's saying I'm bad, what does he know? I'll show him by making an amazing play" when they proceed to get themselves killed yet again. Try it.