Not being rude but she isn't a big enough star to be "hated on".
Like it or not, it's mostly the "stars" who get exposure like Cheryl Cole, Gaga, and even Tulisa who will get criticism because they are always in the public eye and being discussed. Nobody even cares about Alesha Dixon.
Apart from being on BGT and Simons dog, what else does she do? Haven't heard any music from her since she was on SCD.