Crypto certainly doesn't offer price stability when it can go up or down by 5%. And, although you find the idea of defunding the Nigerian government appealing, what would replace it would be far more deadly.
Price stability compared to what though? I think this is an important question because currency risks are going to be relative to your other options. If you live in a place where the local currency fluctuates like crazy anyway, or worse debases substantially each and every year, there's a lot less to lose from crypto instability compared to if you live somewhere with a stable local currency.