I have read this post from the Bluesky CEO like twenty times now trying to make heads or tails of it:

So we built a protocol where you always have the right to leave. If you don’t trust us, or don’t like our decisions, you deserve the right to choose an alternative.

What I am trying to figure out is what kind of protocol they might have built that I did not have the right to leave.

The problem with this argument—the reason that it makes no sense—is that it is bullshit. It is an attempt to hand-wave away the fact that while yes, Bluesky’s underlying protocol is theoretically federatable in a way that Twitter is not, Bluesky the business entity has kept tight control of it such that basically no one else can run it.