- The real user names (DIDs) are cryptic codes that are kept hidden most of the time, with your visible user name redirecting towards it. This gives the illusion that user names can be changed/transported, and that users are not locked down to one platform.
- Content is filtered rather than censored, so that a big monopolistic actor can allow bigots on their platform but keep them out of sight of regular users. Had Bluesky been an ActivityPub hub, it could easily end up being perceived as a nazi bar. This is a benefit for Bluesky who do not want to be responsible for moderating their platform.
They want decentralized moderation on a centralized platform. That's how on Bluesky, there's an understanding that the removal of hate speech "conflicts with Bluesky’s decentralized goals". On Mastodon, the decentralized nature is how we can show bigots the door without them getting to whine about their freedom of expression. Bluesky manages to create a problem using the very same concept by which Mastodon solves it.
I guess this didn't really end up being a post about the benefits of AT. Oops.