Not everyone are jerks. It depends on the game type, the amount of time the game has been available, the player, frustrations about the game etc.
Compared the WoT community to Dota, one is incredibly toxic the other is WoT which has an occasional rager. The big difference for me is that in WoT you can bail as soon as your tank is dead, and the maximum time a game can go on for is 15 minutes. So it's only 15 minutes you lose if your team sucks, compared to an hour or more in Dota. You are also less likely to encounter the same player again in WoT as there isn't a specific SA server.
I like to think that I'm not an ass, so please don't say all online gamers are
