Except that film blockbusters and sensational TV fictions are the majority’s only historical references, and those questioning the fictions in some cases are labelled “racist” or else.
The Youtuber here makes a good point, that historically real African protagonists are ignored in favour of making a Greek queen black: and in fact continuing thereby to keep the field of historical reference Eurocentric.
A recently advertised fiction which has every second English 18th century aristocrat played by a black actor/actress would be fun as satire, but that is not the intent. It too is a slap in the face of the real Africans in their millions who were enslaved and transported for over three centuries.
The PCers wouldn’t dare, themselves, to give us a black Winston Churchill, although THAT I would enjoy!