I stopped developing nsecbunker because it had horrible centralizing tendencies which caught me off guard; I launched it as a POC but it started taking off in a way that would have been bad for nostr would it have continue to scale like that.
We are now getting a FROST-based bunker that solves the completely custodial, completely ruggable setup in favor of a collaborative-custody of private keys. The difference between a Coinbase and an Unchained or Casa: signers assist in getting you keys but they can't unilaterally sign on your behalf.
For the user it *looks* the same, it's as frictionless as Bluesky where the user can choose to ignore all key material, but in the back there is no one single party with access to the entire key which is a massive difference in terms of sovereignty.