I really get the impression that it's hard for people who really know her or work with her to say much bad about her. They seem to leave that to people who are either jealous or critical of everyone.
Completely off topic now, but it reminds me of a Cadillac I used to own. Reviews by the "experts" and people who never had one ripped it for not being a "true" Cadillac and being cheap but overpriced. But I never could say anything bad about it, and no one I ever met that had actually owned one could either.
I'm not saying Miley is a Cadillac, but it's easy to bash someone or something you know nothing about.