I've never even seen it, so I have no idea. I was just fooling around with @Guy Gardener.
But I do think hate-watchers secretly like what they're watching in general. They have to play it like it's the worst thing ever, but it's all an act. If it's truly an unpleasant experience, someone isn't just going to voluntarily subject themselves to watching it. Whatever it is. That's crazy. Who wants to put themselves through something they hate if they don't have to, as if they have no free will?
EDIT: To be clear, I don't mean people who are critical. I mean someone who seemingly has an intense dislike for a show and every time is like, "I give this episode a 1 out of 10!" "I give this episode a 2!" and goes on a nasty-ugly rant. And going into all of that even with the most inoffensive of episodes. At some point I start thinking, "This is too extreme to be believable. What's really going on here?"
Dumb Lost.