Are you all saying that it was somehow... wrong for Germany to fund South Africa to stop using coal?
I mean, coal is nasty stuff; and all the more so in South Africa where a lot of it is mined illegally and informally with a consequential huge risk to both the safety and health of the people who are forced to do it in order to survive. Never mind the immense consequences that burning the stuff has in the region around Ermelo where it is mostly transported to and burned. For various reasons, South Africa has a lot of major issues with its energy provision right now, but moving away from coal is obviously something very important not just for climate reasons but for the health and wellbeing of the people who live in the Mpumalanga coal fields.
It was wrong because Germany, at that point, was still digging up its own villages for lignite coal and phasing out its own nuclear power plants. There were already more efficient avenues to saving the planet.
Germany doing something wrong in their own country doesn't make it wrong to do something good elsewhere, and coal needs to be phased out worldwide.
And could you please not use the stupid right wing line about "saving the planet", the planet will be fine no matter what, it's existing ecosystems and the sustainability of the current number of humans that are in danger. "Saving humanity" is hyperbole too, but still better than dragging the planet into this. The planet will be here millions of years after Homo Sapiens have managed to wipe ourselves out.