This is the more reason the Nigerian government presently adopts the Cashless policy which is aimed at reducing the issues of kidnapping, corruption and insecurities in the country.
The cashless policy, which I see as a policy forced upon Nigerians, is forced on its citizens because they are not ready, and I don't think the country is set to ever be ready for such without any proper preparation to rattle all the challenges the cashless policy will bring. I don't see in any way where this cashless policy reduces any of your aforementioned crimes, kidnappings, corruption, and insecurities. That might have been their public reason for the cashless policy, but its unofficial reason was the redesigning of the old note into a new one in order not to reach some certain politicians, who they believe hold huge amounts of the old currency and it's preventing it from circulation, which they all planned to use during the past election, which to some point does help in reducing vote buying.
without external interference, and I suggest that some of the financial crisis most of these developing countries are facing can be resolved through their adoption of bitcoin in their country just as El Salvador did and are having a positive impact of it on their economy.
El Salvador's government took a great step by making Bitcoin a legal tender, which is a great achievement for the Bitcoin community in general.
The adoption of Bitcoin by the control government, which is the opposition party to the government, is titled to be a mandate upon its people. It's not all situations that I believe Bitcoin being introduced can solve. Even without the Nigerian public accepting Bitcoin as a legal tender, I still believe based on past statistics that Nigeria has the highest number of Bitcoin adopters, more than El Salvador. I really don't view Bitcoin as something that can solve any country's economic crisis by just adopting it. Bitcoin doesn't perform magic.