Modern life has not changed sleeping patterns as much as some believe

I sleep way better when I use a sleep mask or sleep in a blacked out room. Even moon light is a problem for me. When I remove all light, I wake up less at night and can sleep in longer.

However, I have always wondered why when we talk about getting better sleep by sleeping like our pre-tech ancestors, why is the light from the stars and moon rarely mentioned. I'm sure much of our ancestors were not able to sleep in black out conditions. And in the summer months, many places would not have enough hours of darkness to get the recommended amount of sleep. I know its not "blue light" from screens, but it is enough to disrupt my sleep.