Well not really, because that just divides an nsec into multiple secret shares. They still add up to that nsec, so if that nsec were compromised, then it is compromised. Related, I wrote a sketch of a NIP proposal that offers a solution using FROST, but it isn't sufficient without what I named "Chain of Governance"

GitHub

NIP-XX: Quorum for centralizing decentralized organizations by taylorphillips · Pull Request #2179 · nostr-protocol/nips

This NIP proposal sketches out the concept of a quorum for centralizing decentralized organizations in a framework that is maximally flexible &...