That doesn't refute that Mastodon is only one part of the Fediverse, nor does it address that federation actually changes the behavior of the social graph (in c

That doesn't refute that Mastodon is only one part of the Fediverse, nor does it address that federation actually changes the behavior of the social graph (in contrast to centralized Twitter) due to where the power to moderate and block lies. It's not as simple as "the interface is similar, so Mastodon is a (federated) replacement for Twitter."