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?
Yes, it is true that all these 24/12 word Seedphases are mainly for friends and close blood relatives, so caution must be exercised when informing them. There may be many treacherous friends who, after learning all these secret words, will try to steal crypto assets themselves. Therefore, you should not teach someone who can steal it after learning it. Moreover, you should not trust your own wife because she can divorce you at any time and steal your crypto assets.
That's why you shouldn't talk with anybody about your fortune much, only with the close ones by your side.
And it's important to stay vigillant, especially if there is something to worry about (the funds in question being pretty big, etc.)