The biggest culture shock to me since I moved to the Fediverse is the #Introduction ritual. Who you are, where you from, what you do for a living, languages you speak, your interests, your political views, your gender and your orientations, everything about you.
All of this left me with a feeling of envy. Living with so much trust and little fear must be nice.
Growing up in a place where revealing these at BEST means trouble. I cannot do this.