Moderation is better than banning cryptocurrencies, because I don't think the government will fully adopt it these upcoming years, but hopefully, the upcoming decades will make a difference, that is why this step would be the stepping stone for the countries to adopt and use cryptocurrencies, better than totally banning the use.
Cryptocurrencies will hardly be regulated by the government. Even if the authorities are trying to take control over the cryptomarket they cannot influence it fully they way they would like to. The main obstruction in their way for the full control is decentralization.
They could adopt Bitcoin and make it centralized but that wouldn't anymore be the same coin and the Bitcoin as a coin would still exist separately. We will see in a couple of years where will governments greed lead them.