just like all of the 80s military action films with red filtered flashlights or CNC rooms on ships. sometimes, meme like content isn't just made up. as an amateur (at best) astro type person, you learn very quickly how true how quickly a brief flash of white light can ruin your night vision. walking around during the day without sun glasses can also extend the amount of time it takes your eyes to acclimate to the dark. however, once you do allow your eyes to acclimate to the dark, it is amazing to me still how much we can actually see.
On full moons, you can read a book and see the shadows cast by the moonlight. It's fun to take someone to see it for the first time who originally do not believe the shadows are possible.
Fun thing about Friday, there was no moon to see by. But absolutely, the full moon on a clear night can be a floodlight, especially with snow on a nighttime ski tour.