I've heard one of the benefits of activity pub is that you can take your account and its connections, content, etc, to other servers. They were talking about that today on the Vergecast as one of the selling points for Meta's new Twitter clone Threads - celebrities using the app don't have to worry about Meta shutting Threads down because they can take their accounts and followers to a new server. That doesn't seem to be a thing on Lemmy. Am I missing something about how activity pub works here?

Apologies if this is a basic question, I'm still trying to wrap my head around all of this.