There will simply never be anything to cause Trump supporters to stop blindly supporting him.
Trump dissolves congress and installs himself as president for life? They would have a million and one reasons why it was necessary.
He issues an executive order declaring the media as enemies of the state? It's all fake news anyway.
All political rivals are prosecuted? They deserve it, lock em up!
I realize these are extreme examples but we all know these fascists wouldn't even think of opposing Trump if he attempted to do anything remotely dictator-ish.
The military would stop that.
We do not have a parliamentary system in which a monarch, prime minister, or president can dissolve Congress. On the other side, there is no such thing as a vote of no confidence that that can oust an incompetent or unpopular President. Impeachment is for gross misconduct -- literally criminal behavior. Removal is possible for diminished capacity, and it was not used in the case of Ronald Reagan, who had advanced Alzheimer's disease.