This missed the fact that there’s a massive body of evidence showing people have different genetic predispositions to being morning people versus night owls
People have wide variations (in some cases, defects) in virtually every physical and mental dimension we can measure. The idea that everyone's body clock is precisely tuned to 24 hours just doesn't seem right, it's far more likely to be within a range, perhaps between 18 and 30 hours. With that logic, I speculate that many "night owls" are people whose body clock doesn't reset properly until 26-28 hours from the previous day.
I would love to know if there are any research studies along these lines.
Generally speaking, no critter's circadian cycle is 24 hours. They are all "entrained" (e.g reset) by stimuli, among which (blue) light is the most well studied. And non-24 hour circadian cycle in people can be diagnosed, and it is possible to be considerd a disability in the legal sense. But it is tricky to get testing, and insurance coverage for testing.
For me, not using alarms to wake up in general, and sleeping earlier works wonders. I also adjusted to having less sleep as a result of the forced sleeplessness of military life.