the.com/hh 101
The intro course for learning to be insufferably superior about your niche thing.
means A beginner-level introduction to any subject, playfully suggesting gatekeeping has official curricula.
from Mimics college course numbering (101 = intro level), with HH as a stand-in prefix. Internet culture adopted it ironically around the 2010s to joke about people who treat casual hobbies like credentialed expertise.
course numbering101 universally signals introductory level in US universities since the 1960s
self-aware ironyspeakers know they're being pretentious, which makes it actually funny
gatekeeping shorthandsuggests someone just completed enough to feel authoritative about everything