It’s not that propaganda doesn’t work on them, I see those types falling for neo-nazi shit all the time because they know how to appeal to them. It’s just that they process the world in a fundamentally different way, so a lot of the psychological tricks that propaganda relies on simply doesn’t work on them. It’s kind of like how the early days of white supremacy had a hard time getting women because all their propaganda played to mysogyny. Once they figured out that they can rewire their hatred of women to be a good thing (the trad wife) that’s when they started jumping on board and really driving their influence into the american culture.