It is not normal adult behavior and he likely should have had therapy.

But it is not necessarily pedophilia. Because that means wanting to have sex with children.

The explanation I heard is he wanted to be close to children to compensate for his own lack of innocent childhood. Children don't do sexual intercourse. Now if he was a child in his mind, then I as a parent would surely not have gave my children to his care, but this is still something very different from child molesting.