El Salvador's real intention is becoming the capital of money laundering of the whole world. According to the UN, the estimated amount of money laundered globally in one year is 2 - 5% of global GDP, or $800 billion - $2 trillion in current US dollars.
Money laundering was already a prolific business even before there was crypto. When there is enough profit, people would launder money by all means. For poor nations like El Salvador, proceeds from money laundering can be huge comparing to its normal economy earnings.