The problem of seeds is obviously crucial. Can we imagine being the one and only person who knows what to do with these 12/24 words? How to keep them safe, but also how to pass them on to heirs or friends (so that they know what to do with them?). Informing others while preserving your own security can be a real challenge in some countries.
And then there's betrayal, divorce etc...
What are the solutions?
if you cant give your friend the password of your bank that contains a huge amount of money that is so valuable to you , then need to give your seedphrase to other people. the reason while some other person dont need to have access to your seedphrase is for security purpose. your seedphrase is your personal property which you dont need to expose to others, even if you have someone that you can trust so much, the question you need to ask yourself is if the person that you trust so much, if your seedphrase is being revealed the person they can be able to protect it and make it safe but it will difficult and risky to think your seedphrase will be safe in someones hand.