Why is his age relevant to this story?
Prolly went to an uber-liberal college/university. If he was older maybe the school he went to hadn’t gone liberal yet.
His nuttyness aside, his age is relevant to this because he is most certainly a white man. Specifying his age puts him in that oh-so-hated category of “The Barrack” in this country that have begun their tirade that “Old White Men” are this country’s new N word and a bunch of dinosaurs, who when they die off, will allow the Barack to realize their utopian version of Eden - except without the religion part.
Because if he were 94 his rant might be more understandable