With the different strategies by the government to restoring the economy to it feet again, the cryptocurency and forex world has recently become a major target with attacks on berue the change vendors, restrictions on binance and statement from the president's aid making claims that binance will destroy Nigeria if not stopped. .
I didn't have to read your post to the end to capture your point but just a simple clue you are missing here is that cryptocurrency and whatever happens to the crypto market is not controlled by the Nigeria government, bitcoin in particular is not under the control of any government that their policies and regulatory measures should make it a bad year for
BTC. It is a decentralized currency unlike those exchange we are only using as a means to buy and sell our assets which are an entirely different phenomenon altogether.
If the Nigeria government decides to attack those platforms you had mentioned as a panacea to save the naira value, I expect any cryptocurrency user to make use of other reputable platforms that are outside their list of attack and continue with his or her p2p trading. However, if you're a hodler then a centralized platform isn't a good option to hodl your coins as your keys are not under your charge but a third party which makes you not sole owner of your coins unlike when you have them in a non-custodial wallets like electrum and others.
There's nothing to be afraid of, there are a lot of other platforms to do p2p trading with, make use of them and be calm while bitcoin keep rising.