> CAM16 addresses all of the ideas and complaints that anyone could have...

Here's some complaints that better color scientists than me have had about CAM16:

> Bad numerical behavior, it is not scale invariant and blending does not behave well because of its compression of chroma. Hue uniformity is decent, but other models predict it more accurately.

https://bottosson.github.io/posts/oklab/

Here's more:

> Although CAM16-UCS offers good overall perceptual uniformity it does not preserve hue linearity, particularly in the blue hue region, and is computationally expensive compared with almost all other available models. In addition, none of the above mentioned color spaces were explicitly developed for high dynamic range applications.

https://opg.optica.org/oe/fulltext.cfm?uri=oe-25-13-15131

Color is hard.