If you were in his shoes, can you declare your crypto asset to your family? Or do you think he should have declared it to them after the extended family members must have left and even if he did, the information can still leak to the extended family and from there it can escalate to other people. What opinion do you have to give in this situation?
Sorry it's too long, so I'll just start from the title and here.
Each of their choices are different and for them the choice they made was in accordance with what they thought and there were also risks.
If what I understand about this topic is correct then the opinion is that Bitcoin is very easy including how to decide on managing it. Multisign as we know is often used by companies. This is based on trust that does not fluctuate.