He is a bit right about the risks.
It's one thing to have your personal finances and some assets, to have a bitcoin personal reserve, now for a country, but would that be a good idea to expose yourself to price fluctuations this way? And if we ignore price fluctuations, what about an actual attack on that, China has no resources to attack the $ right now as it would first need to buy a ton of them to dump them and hurt their economy also, but let's assume they build their mining power again, how it would look to have a few trillion in strategic reserves while your main economic enemy has control over the hashrate?
I always said, let's separate personal finances from state finances, it's not the same thing.