Does Blizzard Oil the Squeaky Wheel?

I have played Warriors as my mains since the day the game was released, back when their abilities were seriously bugged. Execute would drain your rage whether it hit or not, our chance to hit was calculated incorrectly, et cetera. The boards were flooded with "Fix Wars" posts, and Blizzard fixed us, albeit slowly. It seems to me that there will always be those who are not content with their class, and if they complain loudly enough, things get fixed. The polite requests get lost in the wash.

As I was trolling the WoW forums, I came across this thread. The thread quickly spirals out of focus, but there was an interesting discussion going on in the first few pages. Does Blizz give preference to the forum loudmouths, and if so, is that a bad thing?