Whenever people like him get called out for being a predator/pedophile, it's very common for them to claim to be a victim of child abuse. Ranging from being forced to eat his veggies, not being validated in his retarded fantasies, to actual abuse/neglect or even sexual abuse.
Aside from the fact that victims of child sexual abuse tend to repeat the cycle (yes, oftentimes they abuse other children even as children themselves, a large chunk of child sexual abuse cases involve other minors as the perpetrator), I don't believe for a single moment that he was ever sexually abused as a child. The only assumption I can make is that he was a massive pussy and couldn't handle "no" for an answer when he was a kid, and he called it "abuse."