A lot of the accounts you follow and interact with on here are not Mastodon accounts!

For example, @theatticdwellers is a PeerTube account, @Iancylkowski is a Pixelfed account, @rstv is an OwnCast account.

There are dozens of different server types on here, not just Mastodon servers. When you talk about this place, it's not enough to call it "Mastodon", because it's more than just that.

That's why people call this place "The Fediverse", because that name covers all server types.