One more thought, bit of a stretch though.

Last week an arrest of a Ghanaian person was made in the Caribbean in relation to a usdt-ponzi, and the rumor mill is saying that investigations are under way of copycat ponzis that - guess what - included a large group of Ghanaians too. Since those schemes only accept USDT, this could be a "let me convert my local $500 loan into USDT in a circumvent way" kind of thing.