Little pieces of paper hidden away

When you think about it, probably 95% of the crypto-industry is relying on a small piece of paper hidden away somewhere with a seed phrase/private key on it.

Then there's the other like 5% if not less that has been using some metal plates or something who they think* they are geniuses.

The most advanced technology in term on financial freedom, self determinism and other next generation ideas, all resting on small pieces of papers hidden away and which after 5 to 10 years won't even hold any of the info that was on them in the first place, all waiting to be discovered by the first curious person to reveal their secrets.

Bit ridiculous isn't it ?