Before sending funds to trade on your centralized exchange, always check at immediate time If the exchange still allows NGN (#) P2P because the way naira is been scrapped off from the P2P feature is overwhelming.
Ignorant to do this verification before sending funds from your self-custodial wallets to the exchange wallets will always cost you excess expenses on transaction fees from an exchange to another before you could realize yourself and call it mistakes.
That is true, but most people are already awear about the exchange that are currently using NGN P2P, I think no body who is a trader or investor that will not know the exchange that works for him or her. Apart from binance, kucoin, okx and many more that are not currently trading naira P2P, i believe we still have bybit and bitget and many others people use so there is no big deal. If anything should happen to this current ones people are using all bitcoin traders will be informed, from hence no body will mistakenly send to such Cex. Even though you mistakenly sent it to that Cex exchange after they have delisted fiat P2P you can send the coin via an active exchange which you will just spend less for transactions fee.