Talked about naked children and makes posts like this where you can see he gets off on being nude and wants to use this place to roleplay with others

I don't believe his convenient story and neither should you. Some pedophiles just know how to skirt authority with plausible deniability but when you take them in as a whole they are easily clocked. They signal to their buddies and then they use these language signals to connect in private.
People like you protect them because you are naive and that is why they feel so cozy