The distinction between government and crypto currencies is wrong one to make.
I fail to see how gold-pegged, gasselized (demurraged at constant rate until they vanish down to UBI limit, except from government/CB wallets, with other assets also demurraged when sold/bought via cap gains style taxes), constant supply cryptocurrency would not be in fact better than the dollar and the euro and the yen, and it would be both inflation & deflation resistant.
I fail to see how gold-pegged, gasselized (demurraged at constant rate until they vanish down to UBI limit, except from government/CB wallets, with other assets also demurraged when sold/bought via cap gains style taxes), constant supply cryptocurrency would not be in fact better than the dollar and the euro and the yen, and it would be both inflation & deflation resistant.