That doesn't make sense. If productivity increase is inevitable, it's not a game changer strategy. If technology increases human productivity, then immigrants won't be unemployed in a few years, consumers will be wealthier.

Consumers will be wealthier only if the productivity gains from automation end up in consumers' wallets--and because employment is the main way that money gets into consumers' wallets, this is not a given.

Japan doesn't have any obligation to enable more immigration and give everybody jobs.

Japan’s local governments are trying to give away millions of abandoned houses: https://www.travelandleisure.com/travel-news/japan-free-aban...

Similarly to rural Italy, France, Spain and USA, as people move to urban centers, rural population falls and small towns die. Japan’s demographic situation makes their case extra difficult at the moment.

Those immigrants want to move to the same urban centers because they're looking for work, not a retirement home, so the issue remains.

It's strange how these discussions are framed in terms of the dehumanizing "importing people". Maybe it's a reflection in the minds of those who say it of the idea that people are only means to an end, commodities to be imported and exported.