No one cares. Japanese culture today is nothing like it was 200 years ago.

I care. I don’t want the country of Japan to be a bunch of starving geriatrics a few decades from now.

I care

doubtful

Ever heard of Malthus?

Yes, a deeply flawed theory.

Right. No species has ever overpopulated itself to extinction. Certainly no human sect. Why are there statue heads on an unpopulated island anyway?

That's plain false.

The point is Malthus was very popular in his day and his predictions appeared iron clad, just like predictions about population collapse seem to be today. Many countries enacted population control programs due to his influence.

Reality often has a funny way of evading predictions.

I don't believe that will happen.

It will if nothing changes. That’s a certainty. But yes something might change.