This isn’t meant to be argumentative, and intended more for you to clarify.
One of my special interests is cults, and from my understanding anyone is susceptible to tactics used by a cult. Generally, people need to be in a pretty vulerable state at the time, which is why Scientology sets up shop across the street from a Hospital, for example. Imagine someone recieved bad news or had someone pass, and then the members can provide something that makes someone more likely to join. This property is why cults spanned levels of education, affluence, and influence. Now how "Maga"ism intersects with cultish stuff makes it hard for me to parse.
So when you say “these are people…” are you talking about the sets of people who are attracted by the cult are the “most shitty” or the “most shitty” people are most susceptible?