In the most basic kind of a society there is usually a leader and everyone else follows. There might be a small number of ‘advisers’ who can talk to the leader, but in most cases, it is his decision.
When the leader makes sensible decisions the people go along without pause. They don’t worry about major issues, that is for the leader.
The people in that society do not have the experience or interest in making major decisions. Those that do might think of rebellion or leaving the group.
However, when people have lived all their lives, when their parents have lived all their lives taking instructions from the leader, this kind of ‘dictatorship’ or ‘monarchy’ is normal and desired.
Further, the idea of having to stop their lives to consider a major issue which effects everyone is not something they choose to do.