They are only worried about not enough kids to pay off banksters debts. Much like the Kaiser used to worry about having enough males to kill off on battle fields for what ever elitist notions he had. Humans as resource digits. Integers. Statistics.
The populations of the Soviet Union and its satellite nations did a very effective job of bringing down their anti-freedom governments by starving said governments of new warm bodies to staff the planned growth of government-controlled industry and the military. Making lots of babies in a pyramid-scheme society simply feeds and perpetuates the pyramid scheme. In the West, the socialist governments are trying to fight back by making up the difference with uncontrolled immigration. The native populations need to fight back hard on that front TOO, not compete with it by responding to government pleas for more babies. People are limiting their reproduction because they can’t afford a decent life for children when they’re being so heavily taxed to fund the ever-growing pyramid scheme. We can resume higher rates of reproduction later, after the pyramid scheme has been starved to death, and we can bring children into societies where they can be assured of living with some reasonable semblance of freedom.