Imagine Chrome not allowing you to visit specific sites and then Firefox not allowing you to visit a different set of sites.

Imagine a worse, less fitting analogy

You can literally spin up your own instance in 20 minutes and see every instance ever if you’d like, it’s a choice and its good to have

xenophobes scared of everything and defederating everyone

Go join a monolithic network if you are not interested in the features of the fediverse.

baby its not xenophobic to defederate, calm down

Ability to choose with whom to federate with is a core concept of the Fediverse

If you don’t want any defederation, join an instance that doesn’t do it.