Countries issuing a digital version of their federal currency is a huge move in the direction of centralizing the control over the money supply in the hands of a few central planners and policymakers, with far-reaching effects even outside their borders (as is already the case with the Bretton Woods system). This is another reason why libertarian-minded people and individual communities may want the ability to manage their own complementary currencies:
https://www.cnn.com/2020/12/04/economy/china-digital-yuan-currency-intl-hnk/index.html