On one hand, I wish we had maybe gotten some more time to see why Dickfuck is such a self-serving, pessimistic, spiteful asshole. Whether it be trauma, showing of his empathy deteriorating over time while being a douche online, or something else, I feel it could've made it a bit more understandable as to why he is going to such an extreme route.
On the other hand, not everybody needs to have a deep reasoning for their actions. Sometimes, people are just assholes. Take a HUGE asshole and put them into a lawless situation where most people can't hold them accountable, and they might do all the things they never could do because of societal standards and laws.