There's no useful analysis here, since the author hasn't bothered to ask any protestors why they're protesting, but here's hoping these are more steps towards a Red Africa.
Countries with active or recent protest movements mentioned in the article include Kenya, Uganda, Zimbabwe, Angola, Eswatini, Namibia, Mozambique, and South Africa.
Why so? I think there are other revolutionary leftist parties ready to fill in the gaps for those countries
As to the other countries, they strike me as countries of similar political arrangement to Venezuela: Global South socialist-leaning ruling parties, that survived the Cold War, but whose political ideology, policies and leadership has been partially hollowed out as a result of such war, and the resulting domination of neoliberalism... (At one point or another, I think one of em's a comprador state)
I'm hoping, for God's sake, these countries get a turn around
This is my understanding as well. However revolutionary these governments once were, many if not all have been undermined by neoliberalism. Granted, of course it's plausible that the US would try to exploit any discontent in its favor. But whether or not that's the case here is still unclear.