I'm guessing people must have to fill in a form listing the things they dislike and so forth and then the producers deliberately match them up with people who are going to push those buttons?
Every time I watch it every menu gets a comment of "I absolutely hate xxxx" from one person. Can't they even find out what the other people might like? Frustrating.
The one I saw last night had its moments even if the utter twat did win.