You've touched on a major issue which is that many Republicans do NOT think that they are openly supporting a dictator, they don't realize the danger.
I'm guessing they're caught off guard by the fact that these acts (which resemble an attempt to establish a dictatorship) ARE being done fully in the open.
How else can you succinctly describe the brazen, persistent, and unprecedented attempts to overthrow the results of a democratic election? What about their published plan to fire employees of the federal government (who are not political appointees) and replace them with loyal sycophants?
It seems like a move towards some kind of dictatorship to me. If you're working to hold on to power despite the votes of millions of people we have a word for that: dictator.
I can only hope that this turns out to be some kind of clever plot by the Republican party and they don't actually still support Trump. Maybe the people who still say they support Trump despite his naked attempts to become a dictator are just trying to "own the libs" some more and don't actually want him as dictator? Maybe the party leadership knows that Trump is done and they just need him to throw his support behind someone else before he gets thrown in jail and they too recognize the danger?