But like I said, I’m not a political historian just an idiot with a half baked opinion.
All political movements and all politicians are convinced that their power is 100% legitimate and they should therefore be able to have 100% control of and visibility into everything that's going on.
The idea is compatible with most peoples' definition of democracy. You don't need to support other aspects of authoritarianism usually associated with right or left wing dictatorships.
As to your question: yes, most authoritarians are conservative in nature, given that the world has mostly been moving away from authoritarianism over the past few decades.
Also, I completely disagree that the world has mostly been moving away from authoritarianism. On the contrary. There was a time when at least the direction of travel seemed assured. Now I'm no longer so sure.
So please, debate policies on their content, not on their label. Reducing everything to a binary decision only serves authoritarian agendas.