Originally Posted by Paul

Perhaps he is questioning how "realistic" is it.

Its a common trend in films and tv from the US now.
The "representation" of minorities now generally exceeds reality.

I have no idea what % the coloured population was in the west back then (excluding slaves I guess).
I could not find an equivelent for race, but in a 2019 poll, people in the US estimated that 23.6% of the population were gay, you can probably guess where they got that perception from (the real figure is about 4.5%).