Yes, I agree but I don’t find that a satisfactory quote and I’ll bet that you don’t either given your dedication to education and trying to make bitcoin more accessible to people. I think we probably agree that bitcoin is for everyone, but just not yet.
Securing 12 words is not sufficient for wealthy older people because those 12 words will die with you. I haven’t found any solution to inheritance without bringing in a custodian. Can you think of any way to provide inheritance to children without a custodian?
That’s why I referred to the problem as “unsolved”. If we found a way to solve key recovery and key inheritance, bitcoin would be “for”more people than it is now.
If it’s true that a custodian is a necessary evil, then I guess the question is … how should we design custodial solutions? Probably as geographically decentralized as possible, potentially using technical friends and family instead of commercial / regulated entities.