It is unlikely that the actual king Xerxes walked around in golden underwear, speaking like an androgynous robot.
But what is powerful about this brief video is that it shows the power and the majesty that God Kings in the ancient world commanded over their subjects. Today modern people laugh at the idea of a King or Pharaoh being a living God. But in the ancient world, many people really did worship their rulers as Gods. Many people truly believed that their kings were the bridge between the world of the living and the heavens beyond. These rulers commanded a fanatic awe among their subjects that is hard for us to imagine. Like a celebrity, sports star, or dictator – but so much more.
So movies like this help us understand the psychology of the God King and his followers.