Absolutely spot-on. In fact, the Xhosa tribe (a Bantu tribe famous for the clicks in their language, and for producing Nelson Mandela) got those clicks from th

Absolutely spot-on. In fact, the Xhosa tribe (a Bantu tribe famous for the clicks in their language, and for producing Nelson Mandela) got those clicks from the Khoisan tribes (the original clickers) by committing a massive genocide and taking all their land. The linguist John McWhorter gives an explanation of how this happens in his Great Courses series.