Giving poor people more payment options doesn't solve their problem of lack of money. In some cases it makes it worse due to some of the fees some of the Fintech services charge, which are more expensive than handling physical cash.
Across Africa the failure of some governments to fulfill some of their basic functions is leaving a gap for privately-owned companies to provide what are supposed to e public services. But, at what cost?
With any tech regulation or policy passed, it has to pass a test determining whether it benefits citizens or not. If it doesn't, it is likely there is corruption involved. Alternatively, it could just be rent-seeking.
Kwarapshin, as it is sometimes known in Nigeria, is not unique to Africa, it happens across all countries in the world. However, looting public funds has a more pronounced effect on citizens' lives in Africa.