Learning is an independent activity at university. Students who don't speak English as a mother tongue struggle to decode the content, let alone make sense of it.
For centuries, written communication was tinged with formality and finality. But since the emergence of casual forms like texting, using proper grammar can be fraught with misinterpretation.
There is little value in translating academic texts into "high" or "deep" versions of African languages. Most students read and speak their mother tongues in a far more colloquial fashion.