I think, I might call it a “pleroma” for now, then.
The thing that just irritates me, is that everyone just refers to Mastodon and Mastodon alone. The Fediverse is much bigger than that and depending on what you’re looking for, Mastodon may not even be the right choice.
As you probably know (because you wrote it in your bio), writing long posts is not that easy with Mastodon, so I personally think that Pleroma is superior (again, for my use case).
Due to the Activity Pub protocol (or system, or whatever) in the background, native clients for Mastodon also work with Pleroma or other Fediverse software, yet Tusky always shows the word “toot”. This is what made me think about what it should be called on Pleroma, instead. So that’s what it is, a “pleroma”. ?