My problem with these high transaction fees, is that customers naturally wants to minimize expenses, so if they choose to make payments with bitcoin, then they will want to exchange it at the exact rate of USD. So the seller bears the cost of the high fees alone, which may lead to selling at a loss. Although I'm guessing that the high fees might not affect big business owners, who receive payments in bitcoin, because they sell with higher profits, and when they minus the cost of the high transaction fees, it still won't affect their overall profits.
What is there in transaction fee, the question you should have asked yourself is will you be worried is will you complain if you are sending bitcoin to an exchange, you will surely pay the transaction fee to the miner before it gets to anyone, instead of converting on exchange and trade or swap to get other currencies, I would bear the cost of transaction since I'm the one buying. However, considering how high the naira to the dollar is in Nigeria, I will settle for Bitcoin through lightening Network.
I feel that this is a big edge that fiat currencies have over bitcoin, because you don't have to pay extra to buy goods or services, even when you make fiat payments through banks, they only charge a token as transfer fees. So this high fees is a disadvantage to small business owners like me who has the intention of receiving payments in bitcoin.
I understand your frustration when you convert $$ to naira, they look big but when you look at the other countries that make payments through dollars, you will choose to make payments through Bitcoin as you will not be paying just the fees when you used card or fiat, the associated task will discourage you.