Much is wrong with this article.
First of all, yes the median age in SA is 27 (well you got something right at least) but 25% of adults in most townships are hiv positive meaning their are immune compromised. And 30% of them are not receiving treatment. So covid is a big risk there.
Second, there are other studies saying omicron is mild (hk university for example), and as we all have learned in this pandemic you can find a study to support anything
You seem to have huge bias against a lot of work done around the world I think you need to examine your own problems of discrimination