Is that something africans are talking about
In 2006 an Angolan rapper in my country literally made a song about the Chinese taking over and every Angolan being part Chinese in the future. shyt was bumping too. Up until now there's been more songs (2 every year or so) about the Chinese and their adoption of the culture and language, more and more. But before that rap we were already discussing the amount of chinese immigrants...I can only imagine that the watching is even more intense now. This means the issue is more scrutinized nowadays most likely (I don't know because I'm now in the US).
Essentially speaking, this topic has been being discussed for almost a decade now. At least in my country. So yeah, the awareness has been there for a while, I don't think Africans bat an eyelid to articles like this.
Oh and a small part of the population back home has already been hostile to the Chinese since they came, in part because of this particular fear we both share.