EdgeGamers has standards of behavior which, surprise surprise, we enforce. Many people confuse a mature rating, with the right to talk trash and be disrespectful. They have a "If you can't handle my style maybe you should leave", (translated from the Anglo-Saxon) sort of attitude. They confuse the rating placed on the game with the rules that are set by the owner of the servers. They don't like their style cramped and they don't like being told how to act.
Mature people know how to behave when they are a guest. You don't need to agree with your host but you do need to respect his wishes. If you can't do that you politely say good bye and leave. That is how a mature person acts.
Contrast that with the behavior of an immature person. Disrespect, whining, insisting that things should be done their way. EdgeGamers must be wrong because they can't have it their own way. EdgeGamers doesn't let people act like grownups (badly) so they are prissy and deserving of derision.
Think about it. I know where I prefer to play.