I don't get it, why am I seeing the "out of gamut" colors if my sRGB monitor is unable to display them? Would the charts look different on a P3 monitor?
edit: Also, you mentioned the colors "beyond the ranges of human perception" but I don't think there is any such limitation here, the bottleneck is the hardware (computer monitors).
I don't understand why HN sometimes responds aggressively to an honest, puzzled question. It's as if being wrong (or confused) was a sin here, sometimes.
I thought yours was an honest question that warrants an answer (which thankfully Chris answered).