Didn’t pedophile originally mean a person who loves kids in a not-necessarily sexual way, but over time it has developed to its current meaning which pretty much precludes anyone wanting to use the term to describe themselves?
I wouldn’t know for certain, but I’m pretty sure the answer is no. The ‘-phile’ suffix generally refers to an irrational fixation, an attraction as severe as the repulsion of a ‘-phobe’. It can be used non-judgementally, or humorously, but pretty much always indicates some level of obsession. So I can’t imagine ‘pedophile’ ever being used in a strictly positive way- children aren’t something one is ever supposed to be obsessed with.