One's hate of sunlight should not affect other people either. Again, this is a daytime flight, light is natural and anyone with the background in biology will tell you that sunlight is important element of setting your body clock. People who want to sleep are welcome to use masks, I don't understand why the entire plane should be forcibly kept in the dark against passenger's wishes when it's departing in the morning and arriving in the evening, which is unhealthy and honestly quite uncomfortable. As I said, night time flights are a different matter.