I remember quitting :birdsite: right after #29C3, the 2012 Congress.
Between then and now, every Congress, every hacker camp, incessantly promoted Twitter. Invited people to tweet under the relevant hashtag, displayed tweets on at-venue screens all over the place, etc.
This year it's all fedi. Toots in #37C3 displayed along the @name@example.org address; @Tusky (and possibly other fedi apps) getting their own info cards on these as well.
I waited for this for a decade.