If only this was what the government would do in all countries around the world, for sure the economy of every country that recognized Bitcoin or cryptocurrency like El Salvador did would be good. And for sure, there are many people who use digital currencies, right?
It's just that there are other countries that are really closed-minded to cryptocurrency or bitcoin because government officials think of nothing else but their own welfare due to being corrupt officials.
I am skeptical about this possibility, because El Salvador can only receive investment flows and tourists because it is the first country to adopt BTC officially, and they have many volcanoes to mine BTC

At the same time, El Salvador is a small country with no domestic currency, it has used USD for many years and the implementation of a new experiment with BTC cannot cause much risk. Other countries do not have this, they dare not put the whole economy at risk, they have to be cautious like the US and EU. Sometimes they also want to protect their domestic currency, for example Nigeria is trying to do something to save the value of their naira.
If most countries accept crypto, we will be able to easily transfer money and make payments much faster and cheaper than the current traditional banking services. We will have more resources to develop the economy and take control of our own finances.