What you say now is in complete opposition to the OP. Every Argentinian can buy max $300 every month since this is a new limit, and as far I know Argentina is not on Binance blacklist. In practice, it would then be possible to open an account there and trade by using some of Binance deposit methods listed here.

But this whole story about safe-haven currency falls into the water if we consider the average incomes in Argentina. Most have just enough money to cover their basic living expenses, and for most, investing in Bitcoin is something they can't afford.