Crypto isn't possible with todays tech, because it's an ever increasing bug bounty program that's super slow and has no undo button for fraud (which the elderly are extremely susceptible to).
You could say the same about people having the ability to make wire transfers or international transfers. They're largely irreversible after some period. Every kind transaction becomes irreversible eventually.
No one has solved the elderly exploitation problem yet for the existing banking system. Not sure why it would be fair to hold crypto to a higher standard.
