Here are the quotes of some of his messages. I think he was aware of the deflationary nature problem of scarcity with bitcoin due to which he was of an opinion that it is difficult to use Bitcoin as a mainstream currency with a government.
Yep, it seems like Satoshi knows about the economy more than 95% of this forum users do. None of the world's dominating countries is using deflationsry currency for obvious reason.
The only way to use government-issued crypto is to make some stablecoins, just as fiat that we use today. There is no need to use Bitcoin for that and push it to become an international currency.