You could use the same argument about the people not being crazy, just not believing experts, with a lot of the sovereign citizens in this community. They believe the non-experts who tell them there’s a cheat code they can use to get what they want from the government just like these people believe the non-experts who think Muslims went to the U.S.
So maybe it’s not ‘on the surface insane,’ but that’s only because they are similar people who both don’t question what they’re told by amateurs and reject authorities. Which I would say is pretty crazy of them.