It is that way because there is the need for cash-in/cash-out service, which the banks provide.
This e-naira was to be rolled out in phases, where mobile money agents are the cash-in/cash-out for the unbanked.
But it won't matter.
As was stated here by the CEO of Nigerian exchange bitnob, ... the e-naira is dead on arrival.
With the amount of resources and influence pushing it, I'd say adoption has been very bad. Terrible.
Even the forced adoption isn't working at the moment. DoA