The etymology informs the meaning. And the etymology is that a bunch of self-help books trained most people, including you, to be deathly afraid of a neurodivergent minority named after a queer child. Your entire understanding of NPD comes from pop culture ghost stories that you believed with all the gullibility of an easy mark.
If this were the 1980s you'd have just as easily been swindled into fear of the terrifying Satanists, and if this were the 1930s, you'd be falling for Hitler's rhetoric about "the Jews". "Oh, it's okay to call them heebs. It's punching up, since they control all the banks." You've been tricked into thinking a vulnerable minority controls society.