In El Salvador I assume that for some small businesses, Bitcoin helps in this way:
There must be many small vendors, food being something that is usually cash, who accumulate change and dollar bills.
This produces two problems: 1. Theft and 2. The need to pay for things with this loose change
If they have a bank, it is still an expense, protecting money before deposits and getting to and from the bank frequently. Also banks charge fees that eat into small biz profits significantly.
If unbanked, in the USA, I believe Western Union allows one to deposit cash and pay bills but this is just a very expensive sort of limited banking.
But if a food vendor accepts Bitcoin, both problems are clearly reduced. All ES has to do is allow payment of anything that the state charges small businesses for in Bitcoin. I mean taxes or electric bill.
I assume this is already happening and if so, gradually Bitcoin are accumulating in ES besides of course those purchased by the government directly.
It seems to me that while remittances from overseas can be improved via Bitcoin, internal usage of Bitcoin is a huge area for helping citizens and much easier to implement.