I don't see anyone, here at least, complaining about her being cast; just expressing amusement that she's getting the same treatment as people that we're actually heard of before.
I think this headline sums it up perfectly:
http://www.kasterborous.com/2014/05/cute-singer-never-heard-cast-show-love/
Well, it did seem like there was a little grumbling early in the thread. But yeah,maybe I'm just having flashbacks from GB.