They're not really the same thing, compared to vi[m], emacs is statistically dead. And there are already lots of people who're well into their careers in academia and industry who aren't users of either.
My own contrarian and probably equally wrong take is that it's mostly about accepting the (evidence-free) premise that modal editing is actually a good thing. It's hard, you suffer but lots of smart people tell you it's worth it and perhaps your suffering will help you be as smart as them. It ends up being closer to hazing and penance (your editor as hairshirt) than actual gatekeeping.
My own contrarian and probably equally wrong take is that it's mostly about accepting the (evidence-free) premise that modal editing is actually a good thing. It's hard, you suffer but lots of smart people tell you it's worth it and perhaps your suffering will help you be as smart as them. It ends up being closer to hazing and penance (your editor as hairshirt) than actual gatekeeping.