These are my attempt at a few fast-and-sloppy diagrams illustrating how #Mastodon and #bluesky handle two kinds of message, both in the simplest scenario and in the more complicated conditions they'll both operate under when Bluesky goes into full production. Part of the point here is that the beta obscures some of the major differences between them. Seeing how Bluesky is intended to operate according to the spec makes it easier to assess its implication.
Looking at the differences between multi-server fediverse relations and multi-server Bluesky relations ought to make it easier to see why Bluesky couldn't just lift Mastdon's moderation solutions wholesale. And it opens up a bundle of questions about how federation and moderation work on the Bluesky network that probably won't be clear outside of the company until the beta ends and third parties start federating their own servers into the network.