Nigerian money is not a legitimate money to me. Here I said this, does that make nigerian money worthless? Does it make it zero? It doesn't, whatever I say about nigerian money (no idea what it is called) doesn't change the fact that a whole nation uses it and will keep on using it and me saying it is worthless will not make anything, if I call it illegitimate that doesn't change anything for them.
It is called Nigerian Naira and I know the sentiment on your comment because even I was upset when I read the article and news. But from the government's point of view, what they wanted to say was that they don't recognize Bitcoins as a legal means of payment and currency, which is being understood as if Nigerian government has voiced against Bitcoin. I don't like their decision either but a lot of countries have banned the use of crypto and their the one in power, they can take decisions for their country.
Countries are reluctant against legalizing of cryptocurrencies because of the illegal means that come along with the legalization and no one can deny that the use of bitcoins, although unfortunate, is dominant in the black market and is easily used for illegal purchases.
Lots of illegal doers always finding ways to deal with their illegal transactions, which means crypto is not exempted,
but there's no excuses with how Nigerian government foreseen this industry.
If they think that this system is not acceptable as payment means then it's their predicament and that's part of their rights.
They are seeing it from the understanding that they've known about this entity.
We can't deny the fact that there are alike mindsets all around the world, just need to accept what other's opinions or what they've think about this system.