I think she's fake and that's about all there is to it. The music isn't awful, but the lyrics are terribly juvinile. I also have little to no respect for "artists" who just sing what and how they're told by those who manufacture them.
I probably wouldn't mind her nearly as much if it weren't for the fact that she seems to think she's punk. I felt bad having to explain to sixth graders who thought she was punk and that they were punk for liking her that they are, by all definitions of the label, not punk. They looked sad. xD
If I was at my own computer I'd link to an old article on her that I found interesting...
*Googles "Avril Sucks"*
It's the first thing that came up. xD
http://www.recroommagazine.com/articles/avril.htm