ive been asking about this for a long time. ive yet to be presented with a non-bluesky controlled relay instance. this is a lynch-pin of the protocol and prevents true federation.
happy to be proven wrong someday, but bluesky is just twitter with user-contolled nodes. they can decide to remove nodes at their whim.
which is similar nonsense which ActivityPub has with replicating whole datasets everywhere… cept its one company controlling the whole shebang. its a failure of design.