That whole story sounds a bit apocryphal but even if it's true this is some sort of semi-literate culture. If they're making marks in mud, how are they supposed to encode geographic positions with enough accuracy and write them to a computer system of any kind. And then have everyone understand and agree to what it means. Why it would it be superior to taking a picture and posting it to Whatsapp or Facebook?

The government would have to cede control of transfers, which good luck with that. If you require the government to sign the transaction you now effectively have a permissioned database which doesn't require a blockchain to implement.

Armed mobs probably don't care about the blockchain though. And shall I lose the ability to sell my land if I or somebody else loses a private key? Shall my land be taken from me if a criminal is able to hack a computer and transfer it to themselves?

The worst part is cryptocow's milk tastes like shit