The control can be of two types: the first is the control over bitcoin price while the second is the control over your own money. Bitcoin do not give the government or central authority the power to have any of the two controls. But according to your post, you are referring to central authority control, like the government.
But regarding economy, bitcoin is an asset and its price is controlled by demand and supply. People buying more and the coin is becoming more scarce which makes its price to increase. In short, bitcoin is an appropriative asset and that is how I see it is helping Nigerians, for people to use it to hedge against inflation.
Well I don't know how it will look like and if individual whales can control the Bitcoin price then government entities can do that as well if they heavily invest in Bitcoin with their national wealth. But if the government is trying to control the price without investing, then they can not do that because as you rightly said, Bitcoin price is moving with the demand and supply. And one thing we have to know is that Bitcoin is not on this Earth to remove inflation if not inflation has been removed since but it is to make the Bitcoiners more comfortable in the time of the inflation because of the increase of Bitcoin. The economy is very bad but Bitcoin is making it users to surpass the economy so they are not feeling the impact of the bad economy. Though when they go to the market they feel the inflation rate.