To me the interesting thing about the #fediverse is not the so-called freedom to choose and move, but the #decentralisation created by #federation. The result of both is that the fediverse is a far more comversation-based place than the silo of birdside. As one's opinions not automatically spread across all the fediverse but only to those subscribing to one, celebrity-style statement-dropping gains far less reaction and response here than there. I guess that is at the root of why the fediverse and its instances are more "social meda", whereas birdsite is more "scream media".