It is one of the whitest states in the US and already very conservative. It also happens to be the part in the US, with the least natural disasters, which makes it attractive to preppers. It then just got some insane people, which attract even more insane people.

IDK but unfun fact: Anytime anyone wants to talk shit about Chicago, you can point to Boise as one of the dozens of American cities with a higher violent crime rate.