Earlier quoted context omitted.
Not sure where you are but it feels that this is exactly what it's like in America. I am not sure why nobody really cares and I suspect by the time people try to do something about it, it won't be too late, but it's going to take a Herculean effort to fix. Mindset and structural support.
It is. The only difference is that the US (and Canada) are way more welcoming of immigrants than South Korea or Japan. That's basically what's keeping them competitive. I'm also pretty sure that high birth rate from illegal south american immigrants keeps US population going. The legal immigrants have children but at a subsistence level, generally <= 2.
[1] https://www.cia.gov/the-world-factbook/field/total-fertility...