Naomi - ////deeply unpleasant and uninteresting people//
I'm wondering how people who claim not to watch it know that? I haven't a clue what it's all about, or who's in it. //
I would suggest that not watching it now, or regularly, is not the same as never having watched it.
Since the format is likely to remain constant, it's a reasonable assumption that similar types of personality are selected to meet the programmes appeal criteria - so its equally valid to venture an opinion on that basis.