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I chalk it up to immaturity and lack of perspective for how the world actually functions.
I've noticed that lots of people on all sides of any argument come from lots of different places. Different parts of the US, Canada and other parts overseas. They're Vets, lawyers, tech geeks, business people, teachers, professors (and some lecturers disguised as professors) and more. You can certainly make a case for immaturity, but not one based on chronological age.
I find it pretty cool, even if it more resembles the Saloon of Yosemite Sam than the Salon of Henry James.