And what's more interesting is that Nigeria doesn't have bitcoin regulation, and there have been reports that it is planning to ban it, but so far we haven't heard any update.
Even though Bitcoin is not regulated in Nigeria, the position of the government and banks regarding it has never been positive, it has been painted in a bad light, with focus on its risks rather then the actual network. It would be quite retrogressive for the continent if a ban is issued, but I would not be too surprised considering the current situation.
[but for some reason there is also negative things taking place in the name of cryptocurrencies. This needs to be stopped, or else it can ruin the goodness of bitcoin and other cryptocurrencies.
It is impossible to completely eradicate scams, and they would exploit every available financial venture, including Bitcoin, this does not reflect the purpose of the currency. Fiat has been used for corruption, illegal drug dealing and crime, but isn't associated with them.