I'm 41 and have been awake before 7am maybe 20 times in the past 10 years. Half the reason I still put up with computers is because it's one of the few professions where I can work a 11-7pm schedule most days and still excel.
There are morning people and night people. You are what you are, no judgements, but it isn't something you grow in/out of, nor should be expected to.
Oh, my sweet summer child.
Talk to me again in another decade or so.
Are you saying I will grow out of this and become a lark? Or are you saying I will eventually conform, oh wise one?
https://www.sleepfoundation.org/aging-and-sleep/why-do-older...
YMMV but the idea that you can't grow in/out of sleep patterns is empirically false, and I know this from personal experience.
For most of my life, I didn't need glasses for reading... until I suddenly did. Bodies change.
The article seems to be taking about people on the verge of entering "the facility", on their slow slide into dementia, who are making do despite not getting enough sleep. I'll get back to you when I hit 70.
I don't know how in the world you got that from the article, but no.