If we are talking about a specific centralized cryptocurrency, then, of course, the authorities will offer any advantages if this cryptocurrency is used, if in general, then the cryptocurrency should not be subject to centralization, since this is a transference to all its principles
The absence of intermediaries between payers and payees is one of the main attributes and also what makes cryptocurrencies interesting in the first place. The use of cryptography and blockchain technology allows for trustless minting, immutable transaction recording, absolute transparency, unchangeable monetary policy. That is a decentralized system governed by consensus rules, upon which all the participants in the network agreed. If the rules of any given system are not the law and subject to changes by the minority of rulers, then it is not a cryptocurrency, it is just another form of fiat. It will have the same advantages and disadvantages as government-issued money.