At any rate, one way or another, you can presumably use did:plc to move yourself from one server to another so in the interest of "credible exit" this is a good choice
Though, one might take a moment to ask: who controls the keys if you *do* want to move?
Bluesky has identified, I'd say correctly even, that key management for users is an *incredibly* hard thing to do.
But the solution, once again, ends up pretty centralized: for all users on Bluesky's main servers at least, Bluesky generates and manages the keys for them.