I provided an example of a product that’s been on the market for half a decade to illustrate the absurdity of the claim that multisig is useless as a redundancy solution.

This redundancy+security model is built on Bitcoin primitives. Nothing about it requires a third party.

Regardless, for 99% of the population, granting a third party access to view their transactions in exchange for self custody of assets (and the possibility of having them assist in disaster recovery), is a huge improvement over giving up custody to a third party, which is the default in most cases (fiat banking/investments, Bitcoin held on exchanges).