There are a lot more problems there then: "bought the dip" lol

Crypto is not going to "fix" anything. Crypto is just an alternative for those who live on places that the institutions are broken, and the more the institutions are broken the more compelling crypto will become.

To have "easy banking", first you need to live in a place with healthy financial and banking institutions.

To have that, you need to have a government that is able to give confidence to investors that the money is not going to be misused or appropriated.

To have that, you need solid political institutions, corruption can not be systemic, and leadership needs to have a sense of stability in regards to social-economic policy.

El Salvador has none of that. Farmers can have smartphones and even good data connectivity, they still won't be able to get credit to invest on their work, they still will depend in large landowners for their livelihood, they will still be coerced to vote for the local baron who has the connection with higher officials and with the drug traffickers, etc.

Internet access is the lowest hanging-fruit and the least of the concerns.

But yeah, eg. Africa uses sms for lending and transferring money. Which is also perfectly fine and it works there.

Lookup 'mobile payment banking' and it works there, even with corrupt governements.

( I'm not saying the situation is perfect. But for access to money, borrowing, saving and banking, it's a solution)