Heaven is a benevolent dictatorship. Right?
But this isn’t heaven. The problem with all human government including ours is that it is run by people. While we are on Earth, we will always have that problem. So even the best government conceived will be flawed by the requirement to man it with people.
To acknowledge this human failing isn’t the same as saying that there aren’t worse things than an ugly flawed constitutional republic.
When you give any human absolute power, after awhile other people look like ants.