No, it isn't. Shamir's is poorly implemented and has a number of problems which makes it a bad solution, as detailed
here and
here.
Hadn't read the risks. Thanks.
Plus multi-sig brings all the advantages of a standard implementation with no single point of failure.
Right. SSS requires to reconstruct the secrets in one device. Multi-sig, on the other hand, on
m devices. Would it be a bad idea to represent a master public key as a seed phrase? To overcome the problem more properly, without SD cards or USBs that contain the
n-
m master public keys, and without writing down the master public keys (as they're prune to human errors).