Frostr isn't key rotation in the base sense he seems to be talking about though. It's still a single forever-key, just one with several minions.
Discussion
Sure, but if you use different keys everywhere, you just need to rotate those keys, not your main one.
There will never be a rotation of the main key.
Dunno but I think he means rotation of the main key, hence the to-fork-or-not-to-fork internal debate.
As in some fork where a majority of the guardians can sign a transaction to replace the lost main key with a new one and the protocol respects that. Farcaster sort of does this.