It was my favorite zone too. But compared to Hyjal, Vashjir, Deepholm and Twilight Highlands, it's no wonder it won.

I think they were joking around at this point. Interviewing "from the hip", so to speak. Sarcastic interaction performed for the sole purpose of humour.

No, it was an actual poll. http://us.battle.net/wow/en/forum/topic/1920714240?page=3. Uldum nearly tripled the votes of the next highest zone, which bizarrely enough was Vashj'ir.

Oh I liked Vashj'ir, it totally took me on that discovery trip and I had no clue where in the ocean I was. I didn't have trouble with the 3d environment at all, I found it useful (and I played a rogue the first time)
Uldum however, no all thanks to Harrison

I don't know why people hate Vashj'ir. I loved it. One of my top five favorite zones in existence. I also liked Uldum, though I wish they did more with the Tol'vir. I understand that people don't like TOO much of the tongue in cheek pop culture references, but cmaaan, its Harrison Jones.

I quite like Vashj'ir as well. It just seems to get the most hate after Uldum.

I also liked vashj'ir, a hell of a lot, in fact; there's some amazing quests there, like nespirah, or the battlemaid.

Having said that, I have 8 85s, and two chars in the mid 80s, and only one of them leveled through vashj'ir. Hyjal is also interesting, along with being easier to navigate, and more relevant to endgame content. After doing vashj'ir once for the story, i'd never go back there.