Before the ban living were a bit easier then than now for most youths without jobs who engaged on crypto trading and investment.
Then the ban came and brought more suffering and hardship to the youths who was restricted from crypto transactions because to most of them, it was only source of income and they were leveraging from that opportunity due to in availability of job for already graduated and fresh graduating youths.
Taking a look at the Economy then and now there isn't much better changes done to the Economy for banning cryptocurrency transaction, rather the Economy is experiencing high inflation and the price of goods and services are skyrocketing.
Instead of the Naira to even gain value it has suffered further depreciation in price and as at the time of writing, the exachange rate a dollar ($1) to Naira is currently around #580-#600 black market rate compared to what it was before the ban.
SOLUTION
therefore what the Federal Government and central Bank of Nigeria should have done is find a way to regulate cryptocurrency and it activities, this would have created more Job opportunities and help bolster international remittance from profits generated from crypto investment and transaction.
In general I see no sense or positive impact on Nigeria Economy for banning crypto transaction, rather it worsen the state of living for the youths who found thier selves in the business.
Definitely no reason to be banning crypto.
It's not going to stop the depreciation of a faltering fiat currency, that's for sure. And I'm not exactly sure how they plan on enforcing these rules on P2P transactions which are obviously going to occur in spite of regulations.
Perhaps if they positioned themselves a bit more positively towards crypto it'll actually help with their efforts of economic recovery. Have some incentives for quality talent and crypto companies to come to Nigeria - that's the model that Malta/Singapore etc. followed to perfection.