OP, I believe you are asking the wrong question, and the exact opposite question that you should be asking. Allow me to rephrase...
Why is PWM so desireable?
FTFY
And personally, I would like to know why, myself, why some defend it as though they can't live without it. Tint shift? At the expense of efficiency and the possibility of using a light source that can trigger a migraine in those susceptable?
I have a feeling the answer is none other than brand/model loyalty, such that if that brand/model that uses PWM, instead did not... no one would be complaining that the PWM was taken away.
For my own self-preservation, I won't be posting in this thread again, but I'll be monitoring in anticipation of a satisfactory answer, if intellectual honesty could somehow push out brand/model loyalty to get to the deeper truths.