Japan, China, Germany, France etc all use their first language from kindergarten to university.
Now the argument that will crop up is how can we use 43 languages to teach kids in for example Kenya? Our native languages don’t have very many scientific terms for example what is chlorophyll in kikamba? Or what is Volts in Kikale?
Countries with a native common language, religion, & alphabet can be easily purposed to have convergent goals. That said in cases where the best of diversity can be brought together and the negatives erased (USA) then the win is even greater
Vitu zingine tunafaa kuacha kijichocha nazo.
Our native languages are not at all advanced enough for the modern world. They evolved in a very local ‘geographical region’ probably between two valeys and/or mountains. The vocabulary is very limited and there are no fundamental rules on how to speak the languages.
We are better off learning english if we want to have our place in the modern world.
In fact if it was up to me ningefanya English to be a compulsory subject from primary all the way to university. There would be mandatory classes where proper pronunciation is done so that hizi ‘chida za matamchi’ ziishe.