Comment by qznc

My understanding of ATProto is that it essentially means an open database. As a consequence anybody can write an alternative interfaces for any data.

The argument is that with ActivityPub does not care about that aspect. With Mastodon, the database is under the control of whoever owns the server.

The rebuilding part is rather similar, but exporting the data is trivial with ATProto but depends on the admin with ActivityPub.