I think it's a good thing if people can pay their taxes also in crypto currencies. This offers a lot of opportunities for people to start switching to a fully crypto lifestyle. In case you are already being paid in bitcoins than now you can also pay bills and expenses in bitcoins. For the city this also offers opportunities with only creating some small additional financial management. The city can now choose if it wants actively to build a Bitcoin portfolio and stores the coins it receives. If they want any crypto exposure than they can directly exchange it back to fiat money.