[sophacles]

The term has become common on the web to refer to enthusiasts trying to control how people enjoy/use a term or participate in an activity - for instance "real fans only like the stuff from before $album" or "only filthy casuals play the game that way" (or "you shouldn't use C if you want modern, good tooling"). This might be worth reading through:

https://www.urbandictionary.com/define.php?term=Gatekeeping