However, there is a lot wrong with how things are going at the moment. There are really good and creative ways to make sure minorities are represented. At the moment there is a icky tendency for a sort of pedagogic high mindedness which is being generally rejected as absurd by the public. Even people who are full square behind the idea of extending representation and giving, say, black actors a level playing ground with white.
But there is a growing problem which undermines the effort. In RIngs of Power for example as in other programmes (eg Wheel of Time) which have several examples of white characters with black children and black parents with white children. When we watch a drama we enter into a contract whereby the audience suspend their disbelief and pretend that what we are watching is real. This is most important with fantasy programs. So why not cast Morgan Freeman as the child or even wife of a character played by Emma Watson? WHy not? Because it would be ridiculous! It would stop you in your tracks and the spell of belief would be broken. So why is the daughter of the HIgh King of Numenor(white) and black women - a great performance by the way, but an example of bad casting since she simply does not look like her father in a very profound way.
So why not make the entire family of Isildur black instead? The point is Amazon are imposing a moral point virtue signalling in the most exhibitionist way. When I watch a series on Netflix or Amazon, I am pleased to see a range of different human groups represented, but I do not want it to be in my face to the degree that it makes the drama look idiotic.