First off.. You actually can't use the loudness of her concerts agaisnt her. It's like, wth? It's a concert. It's meant to be loud. And I hope you all realise she doesn't write her show.. She has to act the way she does, that's the Miley Stwewart/Hannah Montana character. So I can't see how you can hate her from her show.
Also, she can sing. But her voice is just different. Everyone has their preffered music genres and sounds. She just happens to sing the way she does.
I'm not the biggest fan. I'm not really even a fan. But I do find Hannah Montana entertaining, and her songs are catchy. I just really can't see how you can hate someone you don't even know. -.-'