it absolutely was offensive way before that. from my understanding 2009 was the year there was a unified push to change things across the language though :)
also wow reddit was worse? i won’t lie i never saw it there in the past decade but perhaps i was browsing more wholesome subs than some
but yeah on lemmy it’s not an exaggeration to say i come across it (used as a slur, not in an aviation sense, children 🙄) almost hourly. in another thread i am getting dogpiled with downvotes for asking politely not to use it in a derogatory way.