I can’t do that question justice, but, among other things it is an attitude of extreme antipathy towards all authority(i.e., elites) in science, medicine, and politics. It is the promotion of conspiracism as the default mode of thinking. (The talking points in his phone call to Georgia were born of QAnon, 4chan, etc.) It is extreme grievance politics, where Trump is a victim, and since his followers believe, they too are the victims. It is adhering to the position that nothing Trump says must ever be questioned. In the latter case, it is much like a cult. It is the position that Trump=the state, and that anybody who disagrees with Trump is an enemy of America.