This position makes all sorts of unfounded assumptions about the nature of your government, that it is operating in your best interest, that it hasn't been captured by outside forces/interests etc etc.
Why would I expect a few software engineers to make better choices? When Saitoshi picked the parameters for BTC, were they optimal or picked out of thin air? What if the BCH chain had won instead? We are at the mercy of the ideological goals of a handful of engineers. I'd much rather be at the mercy of the political goals of people I democratically elect.
I could in 2 minutes deploy a new smart contract for a coin that allows for the owner to mint money whenever they want. Cryptocurrency doesn't stop a coin like that from existing.
Many central banks and governments are experimenting with cryptocurrency/blockchain. I believe some have gone live with various projects around voting, currency-issuing and accounting.
Notably also, the US government is using USD-pegged crypto currency "USDC" to circumvent governmental corruption in Venezuela, in order to deliver economic aid directly (to intended recipients who weren't receiving it through government-controlled Venezuelan banks):