It’s noteworthy in that context that the Chinese government has been continually rejecting social welfare programs -of which many democracies in the West have- while warning against “welfarism” and the dangers of “feeding lazy people". So private Chinese companies follow their government’s policy.

Yes, in general this is the trend. In China, however, we’ve seen this within an extremely short period of time. As I said earlier, you can’t compare different countries with that, especially if we make inferences to population growth and declines.

Here you go: “Marriages and Divorces” (and the drivers behind them) by https://ourworldindata.org/marriages-and-divorces

TLDR: Marriages become less common across all countries, and people are marrying later in life. And there is a ‘decoupling’ of parenthood and marriage.

I’m not sure that an international comparison would be too useful when it comes to estimate future population growth or decline, because we see a trend in many countries that people don’t marry, although they raise children. That’s not necessarily the case in China, but supposedly in many European countries. For a population forecast I would guess the birth rate (fertility rate) is a more apt metric.

Addition: Fertility rate appears to be lowest in China worldwide, EU and the U.S. are a bit higher. You can see these and other countries here (you can search for other countries using the search field at the top of the diagram in the link).