I really have a problem with all that. We have come quite far from the 1920's when one would be concerned how the gramophone frequency range fits into the audible space. And yet, this is what we are still talking about when it comes to colors. And I probably do not understanding it all. We have red, green and blue sensors in our eyes. Yet, a technical existing RGB sensor can not reproduce the color we see with our eye-RGB sensors (because only we can see negative red?).
Anyhow, for decades we have now created RGB schemes that try to do the impossible and we can laugh about those who handle it wrong. And this might be defendable in CRT times when three phosphors were all one could do. But nowadays? Where is my multicolored flatscreen (is this what UHD and HDR is about?)? The RGB++ sensors? Audio engineers have it all worked out by now, but what about colors, why do we have such a gap?