I really can't imagine this happening to a country, and what are the benefits?

Printing large amounts of money will only create new problems even if they plan to invest in bitcoin. Rising inflation could be the most likely and even they will lose value from currency.

The following is just an illustration when the government prints a lot of money without control, the value of the currency is lost and someone has to carry a cart of fiat currency to buy something. Random image from google.