Where do you want to put the threshold of 'people liking' something before they can add it to the game?
The only problem is that they are a bit naive.
"Hey, let's implement X! It will be a really great addition to WoW and I am really sure that we can explain to other players that it's optional."
They really underestimate the stupidity of a part of the community.
So no, it hasn't gone down as worst content patch in wow yet.
If you want to be objective about it, the start of Cata was the "worst" content yet since it made so many people leave.