I’m not saying they don’t exist, I’m saying that there’s plenty of people who aren’t genetically night owls, but still stay up late due to a modern lifestyle and then claim they are night owls.

Our modern sleeping schedules are fucked between artificial light, caffeine, stress, day rythms based on a clock and not daylight, 24/7 entertainment and stimuli, …

So just because someone tends to stay up late doesn’t mean they’re a genuine night owl.