A lot of these people that are into crypto are not into it because the naira is weak, they're into it because the country is too hard and people are just looking for any where they can make money from, however little it might be. This is why a lot of Nigerians were involved in the wave of airdrop when it was tapping, referrals and other games. A lot of them did not even have an idea what a token or coin was, but because they could make money from it, they did it.

The average Nigerian who knows and understands crypto will prefer to save their money in a stable coin to Bitcoin if they're trying to protect it against inflation and the weak naira, except it's someone who is a Bitcoin enthusiast.
They do not want to take the risk of saving their money somewhere they can lose it, so they will play it safe.