Theit system has a number of problems but it also has a number of advantages.
Besides, the countries who do let in immigrants are less xenophobic but not by a wide margin.
I'm xenophobic by denouncing xenophobia?
Xenophobia is just another cultural value and if I disagree with it them IM the xenophobe?
Furthermore, you condemned an entire nation and wished harm upon them on the basis of a perceived breach of your own values, which I might add are not completely clear to me.
It doesn't have much to do with cultural relativism, but with the assumption that you know what's good for Japan better than they do.