The West has been bombarded with two ideologies which have lowered the birthrate - environmentalism & radical feminism. Environmentalism says people should have less children to save the environment and radical feminism says women are oppressed in the home raising children so they should enter the workforce to become 'liberated'. No shit this has lowered the fertility rate. Then along come the multiculturalists and say 'now we need mass immigration to offset the effects of an aging/declining population', never addressing the reasons WHY Western societies are aging/declining.
Even if whites were having more children, it wouldn't change the fact mass immigration will still turn them into minorities in the West. It would simply take longer. But when you take into consideration the fact that ONLY countries where whites are the majority have been bombarded with third world immigration, ideologies which lower the fertility rate, and guilt-trip tactics to make whites hate themselves therefore won't put up a fight when third world immigrants start flooding into the West, it's very clear to see this is a war against white people.