In Asia preference toward lighter skin tone existed before race idea introduced. Basically peasants working outside got tanned vs nobles staying indoors, it was class-based discrimination. It’s by no means pretty back then and later meld with western racism and got messier

As someone educated in Japanese subculture I thought it was testing knowledge of hasshaku-sama (urban legend of 8 ft tall mistress, you may also find spicy contemporary interpretation too).

People praising this don’t read “as reasonablly” clause. There’s already wiggle room and political/economic climate involved in how to implement (also, ALARA is not only covering sub microSv/yr realm where background Radiation is about). Moving away from it can certainly loosen the grip in the future, likely at the expence of onsite workers.