The people choose the respost they considers worst and get ISTJ and ESFJ. At least those who voted. I say "hate" because I don't think another way to say (I'm not native english speaker).
Oh sorry, I didn't know! I don't think it's so much they hate the types, since there are so many questions people can still answer differently and get the same four letters, it's more specifically how they would not like to respond to a specific set of questions.