Japanese people fuck plenty. They just won’t fuck anon.
That’s true for most of the developed world though. And honestly that’s what’s actually required because the planet can’t sustain this level of consumption from this many people so the population actually does need to go down.
You would want a slow decline though rather then a total plummet, otherwise you’ll end up with a bunch of older folks and not enough younger ones to support them.
Completely agree about the birthrate needing to decline, however Japan is in a worse position due to Japan’s fertility rate stands at 1.3, while the United States is at 1.6. US also some what plugs the gap with significantly higher legal and illegal immigration than Japan. Japanese tend to live longer as well. So they are ending up more lopsided than the US when it comes to age spread.
Ironically the nations who are already saturated with a modern day standard of living are declining, while the most populous nations on earth are both thirsting for more.
The people who are most likely to be already past the growth mindset are declining, the people who care more about consuming like a westerner than the environment are only just getting started.