Yeah, how dare they make such an accurate prediction based on all we know about population mechanics, limits to resources, and historical growth assosiated with both? We're here to be entertained and have our morale boosted, not think!
There is no reason, why artificial womb, possibly with multiple selection box for genes, is not a very realistic possibility, along with state funded child rearing services. (see Norway)
2. Most people actually want children. Getting someone to actually procreate with that will share burden.
3. Investing in children should hel to fund future pension payments. There is pretty good case for self-interest.
4. China won't care, neither will Russia or other parts of world.
5. Countries that will do that will have a better outcome than countries full of retirees. Unless AI takes over, natural selection will take care of rest