If AT protocol goes public, other software might federate with existing Bluesky servers. Bluesky servers should have a set of filters that would keep safe for everyone joining the chosen server.
Let me clarify, only the Steamboat Willie version of Mickey Mouse characters are in public domain, not the recent versions as Disney holds the copyright. In a few years, more Mickey Mouse shorts will become public domain.
Smaller instance admins are ready for defederating big websites in the event of adopting ActivityPub. Bluesky server owners should have the power to filter out content and defederate from other servers.
If AT protocol goes public, other software might federate with existing Bluesky servers. Bluesky servers should have a set of filters that would keep safe for everyone joining the chosen server.