They’ve spent decades if not a century globally to convince everybody material goods and careers are the most important thing in everybody’s lives and systems, entire countries, have been rebuilt to facilitate this
Now they’re shocked to find enough people chose or were forced to choose that lifestyle above children.
Every developed economy on earth has been through the same shit. They tried everything except fixing the root cause — wealth inequality, housing/economic security, cost of health care and education, no meaningful effort to address climate change and ecological destruction — the only ones improving demographics are the ones who chose to cheat through immigration. It’s win-win as they can continue with their ideological SOP while diluting the domestic labor market and suppressing wages.
There will never be a solution as long as we’re ruled by corporations-in-a-trenchcoat and oligarchs who refuse to redistribute wealth and improve the majorities quality of life.