At the end of the day, Death is neither something good or bad, it's subjective to the people who hears it. So, when a story about death is experienced or interpreted WIDELY by audience, you are basically bring out how a person feels about Death too. When she mentioned that God of Death was a story that was brought by the West and adapted to the East, I thought she go to making the God of Death, be more like an Angel of Death, or the personification of Death, a thing that is completely separated from the human but that is experience by the human.
Instead it was more about the diversity of experiences... I guess it's about the Human experience with Death, the Human relationship with mortality. I wonder where she's going to take it by the end of the story, and how Kaisei is going to interpret his.