Incels are peaceful people and only manifests violence in videogames, so they are an easy target to bullies.
There is not enough violence commited by incels against the anti-incel population. The nerd want to stay at home, playing his videogames, watching his animes. So they are the perfect scapegoat for society's problems. And since foids choose who is going to be incel or not, you can practice social exclusion while assigning the blame to a third party. This allows the narcissist to play as psychopath without becoming one.