As an atheist I agree. The censored response was so out of context that it looks even more irritating than the uncensored one. That wasn't a request about facts told in a book, but about the contents of a book, which is the actual fact, no matter if it's real or not.

In a different context, it could be something like:

Q: "Can you tell when Donald Duck and Daffy Duck took a trip on Popeye's boat?"

A: "I'm sorry but Donald Duck, Daffy Duck and Popeye are all unreal characters, therefore they cannot meet in real life.

While the correct answer should be:

A: "Donal Duck, Daffy Duck and Popeye are all from different comics and cartoons franchises, therefore they cannot meet in any story"