It’s not ‘white rule’ they miss, but capitalism.
Cecil Rhodes (Rhodesia) was a white supremacist to the core as are most of those we revere as "Rhodes Scholars" today.
Turns out in Africa you can't have a decent capitalist system without the former, though. Look at South Africa. They had a space program and pioneered the heart transplant, both amazing accomplishments. Now it's just another gang-run mobocracy. Not every group is capable of even sustaining a high functioning society, much less actually raising it up themselves.
No. Capitalism can only exist in a specific type of culture. Historically, many White cultures have been able to sustain forms of free markets. No Black culture has been able to do that. So, they miss Capitalist Whites.
A non racist question: how many black ruled countries are better off than under a former white (colonial?) rule? Say in terms of GDP per capita or purchasing power per individual. There surely must be some.
Know any black run place where capitalism flourishes, including here in the US?
For capitalism to flourish you need the rule of law.
The free market can only exist under a stable government operating under the Rule of Law. This is a European invention.