I believe one needs to be careful about what one reads, but it's easy to take this too far. Is all fiction error? How about all speech? So, all communication is error, except the bible. But wait, your translation of the bible likely has errors in it, right? After all, many versions of the bible contradict each other in some ways, so some must be right and wrong.
Great, now we can't listen to anyone, read any books, or trust any specific bible. Perfect. Sounds like a plan of the devil...
Communication, whether a fiction book, a speech from a pastor, or otherwise, should be examined and considered. Take from it what is useful, discard the rest. Ask God what is right, what you should consider, and what you should take to heart.