[Geee]

Demographic change can be caused by just a low birth rate, which is more of an economic issue, but it can also be combined with immigration, which may result in changing culture, i.e. "replacement". This issue is currently mostly faced by people who are white Europeans, but these people also represent many different local cultures. Not to mention that Japan and South Korea have also been increasing their immigration, although it has been quite low so far.

All kinds of people have equal right to defend their own culture. It doesn't mean that they're supremacist or racist, even if they think that their culture is better than some other culture. It's only supremacist if it aims to destroy, repress or subject other people, by advocating discrimination and violence.

Thus, "make more white babies" is not supremacist or racist. As isn't calling out violence against white people in South Africa.