Fediverse has the unique problem (or benefit depending on your perspective) of the instance owners being able to cut their users off from other instances, which is unheard of in email. At face value this is done to keep users from being tormented by pedophiles and internet nazis, but my experience is that most of the server admins get a weird power trip out of blocking things, and will overzealously block anything that they personally find offensive or disagreeable.
This extreme amount of curation is why each fediverse instance is its own community. You only get to experience fediverse through the lens of your instance admin's moderation policy.
This extreme amount of curation is why each fediverse instance is its own community. You only get to experience fediverse through the lens of your instance admin's moderation policy.