It has to do with the "masses", whether people like that term or not.
Hopes, dreams, nostalgia aside — the fact is that almost 3 years ago, the forums were much smaller to the point where almost everone knew each other, or least had a vague idea of what the other guy was like.
I've been on many forums since January 2000, both official and fan-forums and the pattern is obvious: Offical forums are always the worst when it reaches a certain critical mass for lack of a better term — because it's the #1 place where people of all personalities go.
(Whether that be blind fanboys, blind haters, trolls, someone venting steam over a trivial or serious parts of the game.)
Even fan forums suffer from the same problem once it gets so popular, that also becomes a place where everyone goes.