Nobody says they're happy, yet people keep buying it. You vote with your wallet, but as long as nobody else does, EA doesn't have to care what a few angry people on the Internet think.
By the time it was revealed to be a crappy game, inertia had carried the sales a very far distance.
I've seen this concept play out with eg NBA Live. EA produced a few decent versions of it in the early 2000's, and then produced a few really bad versions of it in a row. The first bad version sold fine, then the next releases sold less and less and the reviews were harsher and harsher.
EA had an opportunity to widen its Simcity base, that's a cost you don't see right now. More people than ever before have powerful desktop PC's. Today I can get a great PC for $600 to $800. Ten years ago, that money didn't go nearly as far (and these are less valuable dollars to boot). EA just burned a lot of casual gamers.
And won't think twice about buying the next one that looks appealing.
it's not that they don't care, but more like there isn't enough of an investment on their part to get worked up about it.
Just about everyone I've heard/talked to about this launch are people who care about gaming and/or game dev.
That only counts for a small fraction of the audience and customer base