lemmy.org has been down for a while now, even. I just set up a new account on lemmy.wtf because I assume it might not come back at this point.
Update: lemmy.org is back up, for now, and hopefully it stays up this time, but I got an account set up on lemmy.wtf as a backup should lemmy.org become more unstable in the near future.
Although similar to the Fediverse’s ActivityPub, ATProto is set up at least in theory to prevent that in that someone could set up their own ATProto PDS, plus third-party AppViews are a thing as well, for example, I’ve been using Klearsky lately because the default Bsky app is kinda slow.
ActivityPub still beats it in practical application that it’s fully self-hostable and you basically own your Fediverse instance where ATProto still has to associated with Bsky somehow, although ATProto has been trying to decentralize further lately.
I’ve been mulling in the back of the mind over migrating to one of the independent PDSes because of what the main Bsky PDS is trying to pull lately.