Other than potentially providing pseudo-anonymous transactions, what problem does a "crypto currency" actually solve for people in the G12? Even coin desk does

Other than potentially providing pseudo-anonymous transactions, what problem does a "crypto currency" actually solve for people in the G12? Even coin desk does not know. (https://www.coindesk.com/real-world-problems-bitcoin-actually-solve-right-now/ https://www.coindesk.com/real-world-problems-bitcoin-actuall...).