That's an interesting idea. It's a good solution to the problem of sharing all your passwords with your loved ones posthumously. Typically that'd involve keeping everything in a vault which will automatically be released to your person of choice if you failed to reset it. The annoying part is having to reset it indefinitely. I like your idea where you share it with multiple people in advance but they would have to collectively decide to unlock it.

I suffered a traumatic brain injury (TBI) related to an e-bike accident two years ago. I woke up in the ICU after a short coma-like thing and the nurses/doctors asking me questions and it was clear I was answering for the 10th time or more, like we had all done this before, but I couldn't remember anything.

Thankfully my very long password I use for an encrypted Borgbackup I have was somewhere deep or untouched, but, otherwise I would have been fucked. Also, the backup codes Google told me they would always accept failed and it wasn't until I found a random unused Android device in a drawer that had been unused for a year was I able to get access back to my Google account of ~25 years.