Not exclusive to rapists. ANYONE that is overly zealous towards something, IS that something.
Happens every time. Every republican politician who went hard on gays, was gay. Every traitorous sjw soiboi cuck who ragged on about pedophilia, was a pedophile.
Every single fucking time. That's why when you see people saying, "if you were in front of me I would kill you in the most painful way possible", they're pedos in defense mode. These people do and say these things as a defense mechanism because they dont want to be discovered, and they think going hard against it will dissolve any doubt. Unfortunately for them it's a common trope, like returning to the scene of the crime. They ALWAYS do it.