The protocol trivially supports it given there is already a mechanism to indicate you're moving, and all your posts are accessible,and can be pulled down by the new server, or can be extracted from the downloadable (signed) export. So it boils down to willingness or priorities, not the protocol.
Posts are linked with accounts and blasting old posts out as if they are new is not practical in a federated network, and since Mastodon doesn’t support backfilling (and likely never will) it’s just not going to happen. This isn’t even getting in to the logistics of redirecting replies and likes/boosts. The GitHub issue for it has been open since 2019.
vidarh|2 years ago
videah|2 years ago
tcfhgj|2 years ago