Well said.

And this is the reason that the Proof of Person concept  might not gain a lot of traction in this bazaar.
With 'this bazaar' I mean the current fermenting, bubbling cesspool formed by the various cryptocurrency projects.

Nevertheless, I am giving the idea a chance to see if it could survive in some future coin.

As the public ledger is a solution for untrusted parties to work together, maybe if you install a system of trusted parties, you might be able to obscure the ledger somewhat.

Pentamon