It isn't so much the food in America that makes us so unhealthy, though it definitely doesn't help, but there is super unhealthy shit all over Japan. Bricks of sodium and starchy carbs are always in your face.
But in Japan they teach you how to eat to live, not live to eat. You are forced to eat the same thing as everyone else for lunch every day. And the school lunch meals are very healthy and balanced. While they eat it, announcements play explaining the item choices in each meal and how that effects your body. All kinds of shit like that just makes people choose to eat better even when there are companies trying to shove garbage down your throat around the clock.
I grew up in a 23% white district and it was very normal. I just can't care about places becoming less white. It doesn't matter.
And yeah like YNS said, everyone has the right to live wherever they want in my book. You won't be able to convince me that anything beyond the lack of administration and accommodation are a problem.