>>130241082I know this is bait, but the actual answer is that Japan is way more socially conservative than America.
Japs generally don't like standing out, out of fear of being hammered down for being the nail that sticks out. They have way less of an attention whore problem than we do; modesty is still a sought-after virtue in Japanese society.
America's full of social-media-dependent attention addicts--a large number of which pretend to be "activists" online just to receive validation for goodthink and stroke their own ego.