That's mistaking the map for the terrain. It's a networked system for leaving and retrieving messages. It's not a group of friends. The way you expect to migrate a messaging system is by moving the messages.
To confirm, I wish they would migrate posts, too, but I do not believe that the lack of that means that you cannot call it a migration.
However, your definition seems overly pedantic? It defines itself[0] as a social network with an emphasis on audience. Messaging is merely the method of interaction.
[Edit] "audience" is incorrect, I should've said "people"
A "social network" is a networked system for leaving and retrieving messages. Again, it is not a group of friends. It is a messaging system for a group of friends, just like a map is a graphical system for navigating a piece of terrain.
It seems as though you're putting emphasis on the wrong thing. Mastodon clearly believe the emphasis is on the _network_, as in, the people you follow and who follow you.
But I'm not entirely sure why you're arguing semantics with me. It can, by their definition, be considered migration.
> It seems as though you're putting emphasis on the wrong thing.
No, I'm just trying to be clear. If you can't move your messages in a messenger, you're not doing migration.
> It can, by their definition, be considered migration.
Their definition doesn't even require software. If they (and you) are trying to say that Mastodon is a group of friends, I'm going to beg to differ and say that it is a computer program that supports messaging.
edit: and why I'm going on an on about it? I'm clearly being persnickety, but because I think it's an important distinction, especially irt expectations that a user would have. The mystery for me is why you would insist that a messaging system that can't migrate messages has implemented migration.
You're not making a distinction, you're classifying it incorrectly. Containing a messaging component does not make it a messenger.
It's a social network, it clearly believes that the connections between people is the most important part of its offering. It can migrate a user and their connections.
Again, I would enjoy it if it did take posts, too, but clearly they disagree. I'm not going to say that they cannot claim it to be a migration as a result of that.