You do realise it was there own design that failed, it's easy to blame it on "listening to the community" to avoid admitting you fucked up. People didn't quit the first week of Cata, which was the only week heroic dungeons were challenging. All raid content up to Firelands was good as well. The massive qq started after Firelands, and I doubt the community wanted a raid to last for a full year.
I'm not blaming Blizz to make a mistake, all companies make them, but atleast don't go around it and admit it was the company that failed for their own choices.