...There are various different related concepts to that of authoritarianism. These include conservatism, dogmatism, and ethnocentrism. Some focus on thinking style, others on prejudice. Most argue that this attitudinal syndrome rather than a personality trait, occurs for both genetic/heredity and environmental factors. At the core of the theories is the idea of a generalized susceptibility to experience anxiety and threat when confronted by ambiguity or uncertainty.
Thus for various reasons a persons ability and personality, their early life and current circumstances some people feel inferior and insecure and fearful of lack of clarity. Therefore to avoid uncertainty authoritarians dislike anything or anybody that advocates complexity, innovation, novelty, risk or change. They tend to dislike conflict and decision making and subjugate their personal feelings and needs to external authorise. They obey the rules norms, conventions and more importantly insist others do too.
So conservatives and authoritarians get obsessed by ordering and controlling their internal world and external world. They like simplistic, rigid and inflexible duties, laws, morals, obligation and rules. This affects everything from their choice of art to how they vote.
https://www.psychologytoday.com/blog/sideways-view/201502/the-mind-the-authoritarian