Actually having a personality disorder is rare, and very difficult to diagnose. Showing narcissist traits, however, is easier to look for. Not all dubs are narcissists for sure, but the doctrine and way people outside the organization are labeled and judged is to strip away their humanity, so even emotionally healthy dubs see people with a toxic lens that they've adopted.
I am a recovering narcissist. I learned about this thing called empathy, something called the ego, and worked through tons of emotional abuse. My stomach turns when thinking about how I once viewed people. I was a very sensitive kid that became very cold and calloused over the years. I'm glad to say that I found that emotional kid inside (thanks to a book called "Healing The Shame That Binds").
Even the most empathetic dubs with beautiful relationships still are at the mercy of narcissistic doctrine. You and I are ultimately bird food, enemies of God, and therefore their enemies. I once realized years ago that it was hard to care about people at the doors because I was taught to see them so derisively.