Most of us are alright, believe it or not! It is not uniquely Scottish to be an asshole over the internet (I refer you to "The Greater Internet Fuckwad Theory - google it) and like somebody else further up said, the whole "Fuck the English" thing is mostly spouted by undeducated halfwits who haven't a clue.
Admittedly, most of us at some point have dealt out some light hearted banter to English friends or family but that is all it usually is - banter. And we can take it back with the same good humour too.
As for the bawbag who was a Nazi fanatic - good riddance if he goes to Germany I say. They tend to crack down on that sort of thing quite heavily I believe?
Anyway, point it there are arseholes everywhere who are going to give you a hard time about your gaming skills or other stuff based on race, gender and religion. Like every other place you find these types in the civilized world though, they tend to be the noisy minority. They also tend to be not worth getting worked up about.
The only thing I would add, is that judging the rest of us based on a few bad eggs - well, that's surely doing the very thing you are complaining about? And then they win - can't have that now, can we?