I think it is hard for the government to offer a separate and exclusive cryptocurrency. It just makes the economy become chaotic and lack financial discipline.
Do you think that cryptocurrency makes the economy chaotic and leads to a breach of financial discipline in it? This statement will be true only if the decentralized cryptocurrency is recognized as the main currency of the state and replaces the national money. Then chaos will indeed begin in the economy, given its high volatility.
If the decentralized cryptocurrency will go along with the national money, it can bring convenience to people and profit to the state.
I also believe that from the centralized cryptocurrency of individual states there will be no harm to another, decentralized cryptocurrency.