Thinking about it, Azief, Jean and Hikigaya are all the highest level beings on Earth right now.
Right now, they are far ahead of all the living beings on Earth. For them to reign in the world is an easy method.
If not for the fact that Azief had always find a way to grows even stronger, it would not be weird for other people to develop thought of controlling the world
Anyone who wanted to control the world first had to think whether that is something that Death Monarch would allow.
And for example, if Hikigaya is the one that wanted to rule the world, there is still a mountain in front of him that he could not move.
And if Hikigaya stops practicing, then Azief who is always seeking his path forward would become even stronger until he suppresses all beings.
As Azief grows stronger, people had to follow.
And as they follow, they saw their Grand Path. And once they saw their Grand Path, world domination felt like something meaningless
