So many comments here claiming that Aztecs or the Mexica nation didn't sacrifice people, and making other a-historical false claims. My native American grandparents would wonder how people so confidently stupid would be allowed to survive.
The entire movie before that scene is the depicts how the Aztecs committed mass human sacrifice. He was probably happy the Spanish arrived - as many of the natives joined the Spanish to fight the Aztecs. I know you didn't learn that in history class, but that is what actually happened.
@Migey88@AdrianneCurry@ImBreckWorsham The world of politics especially at that level is mostly theater and fake. It's possible it was staged to some degree.