The definition of paraphilia is "a condition characterized by abnormal sexual desires, typically involving extreme or dangerous activities.", which can inclde pedophilia.
I don't have a link, and not saying I agree with their answer, but the lemmy creators (and maintainers of join-lemmy answered this in a AMA about a month ago. They said they'd prefer the horrible people concentrate in their own instances so we can block them easily rather than have them in our instances. The join lemmy list does not serve as an endorsement, but a catalog of all available instances.
"The definition of paraphilia is “a condition characterized by abnormal sexual desires, typically involving extreme or dangerous activities.”, which can inclde pedophilia."
"... can inclde [sic]".
Even a foot fetish can be described as paraphilia.
"4 censures" doesn't seem like a large number, accusing them of paraphilia is beside the point and makes it look like the objection is simply to queer people existing, and you should really gather more evidence than that before going around accusing anyone of pedophilia in this day and age.
On the other hand I had a look at that instance, and I would not federate with it.