The most evil philosophy I've ever read is: He who can destroy a thing, controls a thing.
Nick can wreck so much much shit he can touch, and the systems around him aren't equipped to deal with it. The people around him aren't equipped. So until something or someone definitively steps on him until he fizzles out, he will continue wrecking relationships, systems, processes, norms, etc.
We really need to evolve our systems to deal with the worst cases: People whose dysfunction undermines civilization itself.