the IMF have nothing to do with "trusting the dollar". their game is to set terms and conditions on countries that take loan dollars that allow the IMF to try punishing a country.
IMF gives loans to underdeveloped countries with tough terms and conditions. Since the underdeveloped countries need finances to stand themselves, they take the loans with high interested rates. Once the country takes a loan, it will become the slave of IMF because now IMF can impose any rules and regulations in the country.
El Salvador should not be threatened by these IMF orders and try to establish itself. For sure, with bitcoin, they will become independent of IMF. Also, the current bitcoin dump is temporary and soon bitcoin will be available at higher rates.
IMF knows that a country under only dollar utility, a countries GDP growth is only 1-5% a year. meaning countries cant really pay off a debt in a couple years by doubling GDP in a couple years. meaning IMF influence lasts for decades.
they dont want debts to be paid off. they want continued controls. so that the 'invested' countries can sanction and demand a country thats in debt.
however if a country buys say $200m of btc at $35k and the price reaches say $86k in 2 years. the country then has $491m to pay off its $287.2 million IMF debt. and still have $204million in spare value to return to the citizens