Population replacement doesn’t happen without migrants.
Sounds very socialist and Euroweenieish.
There is a direct link between abortion rights and open borders. Nations need growing populations to sustain the political power of the elites and they are aware of it. But the population needed is one that needs them. Time was it would have been seen as a vital national interest for a nation to sustain itself through the posterity of its own citizens ... but with socialism, and especially in conjunction with what amounts to Cultural Marxism, the need is simply for warm bodies of needy and uprooted to look to government.