Somewhat unrelated but where does this bizarre tendency on this site to call famous tech people by just their first names even if one doesn't know them personal

Somewhat unrelated but where does this bizarre tendency on this site to call famous tech people by just their first names even if one doesn't know them personally come from? "Elon", "Jeff", "Mark" and etc... Normally, unless you personally know some famous person, it sounds downright odd to refer to them as if they were a beer buddy, neighbor or colleague. (assuming here that you and many others who comment here don't actually know Elon Musk personally).