It's not nearly as clear as you purport, and thus, the link is funny and appropriate - there's nothing on that page to suggest its _not_ the best for all use cases - the sum total of its argument is its better in every case.
However, the data isn't 100% there if you work in the spaces, i.e. I'd want to understand more how the CAM16 gradients were generated (CAM16 has two correlates for lightness and another three for 'color', saturation, colorfulness, and hue. CAM16UCS 'only' has colorfulness. How could the CAM16UCS gradient get 'saturated' more quickly?)
However, the data isn't 100% there if you work in the spaces, i.e. I'd want to understand more how the CAM16 gradients were generated (CAM16 has two correlates for lightness and another three for 'color', saturation, colorfulness, and hue. CAM16UCS 'only' has colorfulness. How could the CAM16UCS gradient get 'saturated' more quickly?)