Replying to
@JeremyLittau@mastodon.social Admins deciding what is "safe" for their users (which is very unsafe, by the way) is what creates silos. If a site's admins habitually defederate sites they don't like, then a silo is the result, by definition.
weirder.earth is an example of a Mastodon site that turned into a silo. They block so many peers, some of their users now can't connect to most of their friends.
This is why I believe blocking should be done at the user level only, with the help of opt-in blocklists.