You're implying that he has a disability, which is an asshole thing to do to begin with, especially over a game. You're being toxic as well. How can you not see that?
You also implied that he's a kid, which is toxic behavior as well, because you don't know if he is and you're basing it off of the fact that you don't like what he said. Are you getting the picture yet?
Tell me: how is your attitude any better? Did you not sit back and compare your remark to what it's being aimed at?
You guys need to grow up. Chewing someone's ass out with the very same behavior that you're bitching about is childish beyond all measure.