A talented writer of children's stories and a pedophile are not absolutes in evil and good, they are both humans, and humans are fallible and never entirely one way or the other.

These two also have a lot in common - they both spend a lot of time thinking about children. Same with teachers, relatives, and priests, same with a lot of humans that we assume are good, but perhaps our assumptions get in the way?

If there is any class that is labelled as "not likely to be a pedophile" then pedophiles will make it not so. Best not to obsess on labelling and prediction, and instead take a little care.