>>516071940
>Birthrate decline totally does matter, although their population is massive you need enough room in the able workforce to take care of the elderly who is slated to outnumber able bodies in the coming generations.
Japan has a population of 124 million.
Norway has a population of 5.5 million.
Switzerland has a population of 9 million.
Netherlands has a population of 18 million.
Why does Japan need more people again? Just let the population naturally age and recalibrate, and it will still have a higher population than the other three combined...
Not to mention Japan has even less of a problem than other countries regarding greying population given Japanese elderly have a tradition of killing themselves for the good of the young (fukushima volunteers, 姥捨て).
Oh, I forgot, Japan is not a sovereign country and the American war machine needs bodies to throw at China.