I wouldn't say she is hated on at all.
She seems to be quite respected.
Hated to me would be a star like Justin Bieber or Heidi Montag.
Exactly. Stars or those considered stars are the ones that get hated on. Even talents like Adele and Gaga get hated on a lot by some people.
Alesha Dixon isn't a star IMO to be hated on. She's not a great musician and is just known for her judging roles.