He is not a child predator.
No, but the idea of sex with children turns him on. That makes him a dangerous, very potential child predator and someone I don't want near my kids, or anyone else's kids for that matter.
Viewing adult porn is different. Adults can consent or refuse to. However, a child can not legally consent, making any sexual act with a child rape. Sorry, but if the idea of raping children turns you on, then I want you off the streets and securely locked away from my kids. If you are OK with these people being near YOUR kids, then you need to have your kids taken away from you and given to parents with some common sense.