yes, and i should have mentioned as well the internal labour camp of 'ethnic koreans' in japan. (thinking here of Hick's _Japan's Hidden Apartheid_.)
it seemed to me that any suggestion of japanese socialism -- or even of egalitarianism in japan -- has to be premised on an ignorance and/or denial of the place of korea and korean migrant workers within the japanese economy. moreover, it is much easier to arrive at a sense of an egalitarian society, when those who are counted as citizens do not tend to occupy the lowest rungs of the labour market, whether they're in japan or offshore.
that's not to minimise the importance of the US occupation of japan and s korea; but it is to indicate the hidden reasons for what the article in question refers to as japan's 'egalitarianism' and 'socialism'.
Angela