The Japanese and Chinese engage in extractive industries. They want natural gas and minerals. It is not colonization because neither are undermining the sovereignty of these nations nor are they simply extracting resources without compensation or infrastructure like the Europeans did. Nations take on debt, nations receive FDI, foreigners immigrate to nations to work....nothing crazy about it and its been happening since Ancient times.
Heck. China has pledged to cancel large sums of loan debt from these nations though there are geopolitical implications with that. It is not the job of foreign nations to build social, manufacturing or banking sectors and you only have to look at the leaders of these nations who are big on instant gratification, take money from raw goods, and run to the West to live large instead of using that money to build banks, plants, hospitals, etc.
Could they hire African workers? Sure but thats not the reason these countries are struggling. They have not industrialized and hiring locals to extract raw commodities would not change that. There are real road blocks in most African nations like intra-trade, lack of the aforementioned sectors, energy shortages, trauma from colonization and dictatorships/tribalistic politics but I do not see FDI as something inherently bad. There are countries doing positive things in terms of building whether that be Ethiopia, Ivory Coast, Senegal, Tanzania, etc but that would require most of you to actually read about Africa and its nations which most of you won't take the time to do.
