Remittances are very important for the progress of a country. Bitcoin can play a real role in reducing the fees and time of traditional services when citizens of one country send remittances from another country.
I don't think this is correct.
Sure Bitcoin is cheaper it terms of foreign transactions compared to banks, but it's a case for the citizen, not the country. The country actually get benefit if the citizen use banks instead of Bitcoin.
This is because the government can track the transactions if the user uses his debit/credit card, and that way they can charge taxes, but that can be done too with Bitcoin if the government owns the wallet just like it happens in El Salvador, we know Chivo wallet is a gov project to trace the coins from the civilians and that way charge taxes on their transactions. So, it's the same if you have to use your personal data or do KYC to spend BTC or Money.