You are responsible for your own behavior. Other people flaming you does not give to a free pass to flame them back. You are ruining the game just as much as they are. Just shut up, mute, report, and move on. Why is that such a hard concept for people?
Also, not sure if they can issue bans based off of boards behavior, but I'd up you to a perma for the amount of shitposting you've done on this thread. You have given no compelling argument for your case. Everything you've said is either "suck a dick" or "KYS". So, if that's what you say on the boards, I can't imagine the stuff you say in game.
Anyway, your ban was clearly deserved. Stop pinning your behavior on others and start taking responsibly for your actions. Being toxic never solved anything.