[notahacker]

The vast majority of the planet's population might roll their eyes at the mere mention of the words "gender identity" if they're even familiar with the concept, but everything from simple clothing choices to complex social interactions are consciously and unconsciously influenced by [local, contemporary] behavioural norms along gender lines (including when, why and how far they're happy to deviate from them). Men don't start seriously considering wearing dresses to work or stop telling their daughters that certain actions aren't very "ladylike" just because they suspect gender studies courses are a waste of time.