these two subjects are very different from each other though.
the government creating their own centralized altcoin is not going to do anything for the cryptocurrency in general. not directly anyways. that is why nobody cares about these gov-coins, for instance the Petro of Venezuela didn't change a thing. their stance about cryptocurrency (the first part of your statement) however changes a lot. a more friendly stance (like Japan) will help the adoption grow fast and easy while a negative stance (like India) will only slow things down and move people to p2p methods.