Africa isn't at all at carrying capacity. There's more than enough arable farm land to support the current population and more.
See Kenya, once the bread basket of Africa and now no longer because their leadership kicked out white farmers, gave the land to local Kenyans, and unfortunately those locals even after all these years haven't figured out how to get the yields that the old owners did.
The problem comes down to the locals who are either unwilling or unable to farm effectively at yields that support the population. Then the food aid comes in which is where we're at now.
Maybe I completely missed the point of your post. I thought you were saying NGO aid is counterproductive at reducing population growth. That is to say, it makes it worse.
See Kenya, once the bread basket of Africa and now no longer because their leadership kicked out white farmers, gave the land to local Kenyans, and unfortunately those locals even after all these years haven't figured out how to get the yields that the old owners did.
The problem comes down to the locals who are either unwilling or unable to farm effectively at yields that support the population. Then the food aid comes in which is where we're at now.