Oh, this topic again.
How i love those anti 'bitching' and 'whining' theads. What pisses me more than people who are always unhappy with something, are people who apparently have too much time, and go on a crusade against people with more or less legitimate concerns.
I mean, if i decided to make an, for example, XCOM, and decided to add, i don't know, unicorns farting rainbows to it, would You be happy? Would You voice Your concerns over this direction? And how would You feel when someone told You, You're whining and bitching, and You're an over entitled bastard?
While paying for a game does entitle You to a fully working product, it does not entitle You to dictate where the game's direction 'should' go. But that's a different thing. Sating a concern or a legitimate criticism over a product is not a crime, it's a sign of care actually. Behind every frown there's a motive, just because You don't see the reason doesn't make it wrong. So yes, taking ME3 as an example, the ending does suck, it's lazy, half baked, nonsensical even, and actually it's better that it'll be changed, because the game will not be remembered as the most anti climatic fan screwing trilogy finale ever[?].
Now, while a petition of angry customers, saying 'i bought it, therefore i demand a change' is silly, thing is, what else can be done? I mean, You seriously think people should bend over and take it all the way down without question? Like, buy ME1, then ME2, and then just swallow up the ME3 mess? Why?
A similar example is JA:BiA, where the fans were actually asked for their opinion, then screwed, and the game was a mess, and we had the same 'stop bitching' circus.
It's kinda like watching Your favorite band changing direction, without changing their name [it's surprising how many problems that solves], and slowly go down from some kickass metal, to some uninspired alt-crap.
Sorry for the chaotic mess of a post.
Disclaimer: the world "You" is used without anyone particular in mind, so don't take it personally.
TL;DR: I kinda find this 'i don't really care, and nor should you' attitude silly.