Maybe, maybe not. I do believe that fiction is not just a story, but also a peak into the author's mind. If her writing is trying to paint a picture that is obviously conflicting to what I know the author's beliefs on a topic actually are, it feels like I'm being lied to.

That doesn't mean an author can't experiment with their beliefs, though, and that is where it gets very subjective: do I feel like I'm being lied to or not?

I don't generally spend a lot of time learning about authors I read, though. They tend to exist in a similar space as their characters do in my mind: a place stitched together and colored by the words they have written.