I would blame more of it on social conditioning than on genetics. Our instincts and urges provide a baseline to steer us in the direction that historically has been beneficial to for survival, but those are not what ultimately what decide our actions, nor are they always even beneficial.

One example comes to mind is men not talking about their feelings, not only does it exacerbate mental health issues and cause a great deal of personal anguish and even death, it also increases the likelihood of interpersonal violence which is bad for society at large.

I think the reason why people react the way they do is not because they are trolls but rather because it very much comes off as you making excuses for pedophilia, which is already a very sensitive subject to talk about.