Alex didn't want his coronation to be broadcasted live.
"But it is such a big event."
"How can we not do it?"
"Why?"
That decision, however, became a matter of concern for the demon generals.
As said before, demons were respectful towards strength and authority, and Alex, with strength enough to gain respect, needed to show them his authority.
Everyone in the world should know who the demon lord is so that no one would even dare offend him.
The demons were a reckless bunch, so it was possible that the moment Alex left the imperial palace, a demon would try to show their authority to him.
The case would be solved in the end since there would be many people who knew who Alex was by then, but the fact that any random hobo tried to show authority to the one sitting on top of it was very shameful for the face of the demon empire.
The demon generals didn't want to see that happen.