Make no mistake, this is huge for Mastodon. Currently people have to choose between X, Mastodon, and Threads, and network effects play a dominant role in that choice. If we can say, you can access all the folks that went to Threads from a Mastodon account, that makes it a far more attractive option given all of its other perks 😉
@Gargron I, for one, am looking forward to this. It's one more nail in X's coffin. Some of my friends moved to Threads, so now I can follow them again.
Others moved to Bluesky. I can't follow them YET, but it seems they're also trialling federation, so I might be able to soon.
Pretty soon, anyone still on X and nowhere else is really going to start feeling the isolation.