I actually agree... but not with the reasoning.
All of us here on the forum chat in English. Why? Because it is the only language that all of us understand.
You want to go to university that is afrikaans, go ahead. Then you finish studying and go into the business world... screwed. The same for xhosa, zulu, esipedi or whatever other language.
With english you can go across the whole world for business. With Afrikaans you cannot even go to all the places in South Africa. Same for the other languages.
Want to work with computers? guess what chum it is english. Want to chat to prospective clients in the US. Wait sorry, lose a billion dollar deal coz you cannot speak their language.
In school we all got taught english, you could not advance to higher grade without english. That counts for everybody. So what is the big issue for an university to teach in a single language, that everybody that passed matric is suppose to understand.
Furthermore, my two bois finished university two year ago. Brec for accounting. They struggled the first year with afrikaans teachers. They switched over to english so to better understand the terms for the corporate world.