Moonlight questions

So from quick research, I found that some outdoor growers allow the moon to shine on their plants while they're in flowering. I don't know about other places around the world but, a full moon where I live illuminates my entire window at night.

Which made me wonder why us indoor growers are told to have complete darkness during that stage. Would a slight amount of light, lets say coming through some fans on top of a grow box even effect a plant at this stage? Or am I completely off with this question?

i always thought any kind of light during the dark hours of flowering was bad for the plant.

but moonlight is natural, and i dont think the light from the moon produces enough lumens versus sunlight peeping through a grow area.

but who am i to know, im an amatuer

Well I read FDD's plants have the kitchen light shining on them through his window and we all know what kind of results he's had.