If people were voting people off, I'm sure that Cher, Katie, and Wagner would be extremely low. But people aren't voting to get people off, they're voting to keep people safe. So even though Cher and Katie (and I guess Wagner

) have a lot of people that dislike them, they also have people that do like them, which is what counts. The people at the bottom are the ones that either don't make an impression or are unlikeable to an overwhelmingly large number of people.