A close look at this situation shows that many of these overpopulated nations mostly in Africa and Asia are underdeveloped. While these underpopulated nations are economically buoyant. I think the reason for the poverty of these developing nations is not the population but bad governance and the inability to maximize and distribute available resources equally. We cannot deny the fact that these overpopulated nations are economically important to these developed nations in terms of human resources. And they contribute immensely to the development of these first-world nations in terms of cheap labour.
How do you think these developed nations will fill vacancies in their nations and get cheap labor if the population of these developing nations is reduced?
One of the major reasons why these overly populated countries are underdeveloped is because of the economic limitation these developed countries implemented. Like even when a country is capable of creating weapons, they are sanctioned not to do so because developed countries reserve the right to create these weapons. There are lots of things that normal people do not know, even if the country wanted to do things that can help their country progress, the limitations implemented by powerful countries deprived them of these rights. So instead underdeveloped country can only serve as laborer while developed country takes the joy of utilizing natural resources and technologies for their own benefit.