Nigerian banks always try to work inline with the federal government and how ever they want to carry out their practices but be within the federal government jurisdiction.
Yes the whole government and crypto-currency fracas has gone down a bit but let's be guided, the federal government has not officially labeled Crypto-currency as an official legal tender.

I think private individual can be able to loan money in Nigeria with Crypto-currency especially stable coin as collateral but I don't think the banks will do that for you now.