The only legit answer in the blog about the human level error is to: check, and double check your work. If you messed up, start over because it’s a fresh multisig setup, but nothing about future mistakes.
Additionally the only line for Inheritance is as follows: Inheritance - If you disappear tomorrow, does your spouse know how to co-ordinate a 2-of-3 spend?
Thats a one liner for your future generational bitcoin stack. Seems inadequate to me but fair enough that it is our responsibility to show them and educate them.
Your keys should be distributed across the trusted parties. Multisig not designed to store all of the keys in one hands in one place. If you die the other parties will still have an access to your sats