3 reasons:
1. Gaijin is the Russian equivalent of EA
2. Very polarized opinions within the playerbase which greatly affects the overall balance of rules and vehicles in the game. ex: overproud and go political over one's country which really alters the quality of that person's arguments
3. if you come from a competitive game( with a community that unites in balancing the game's contents), don't use your "competitive" mindset, because you can't. anything that you deemed unfair or is a bad decision will be replied with "it's just a game" or some biased opinion based on their favorite country/type of vehicle which most of the time is irrelevant to the things you're complaining about.