I don't even think that's it. People hate Cher for the same reasons they hate Misha - the UK doesn't like to see confident women. Cher and Misha both came to the auditions knowing who they were, and had presence for days. Both of their first live show performances were star quality, and better than anything Dannii has or Tulisa will ever do on a stage. They knew this, and this doesn't jibe with what the public wants in a female reality game show contestant.
People hate her because she's conceited, bloated, contemptuous and she cares only about herself. #fact.
Why are people feeling sorry for her? She is famous and some what well off , all she needs to do is hug her money and her so called fame and she will be alright , no use crying over spilt piss
Even though I'm not a fan of her music; those people were just rude. 
(me too)