Humanity as a whole has a demographic problem. A few countries are just outliers (being still quite above > 2.1), but nowhere enough to offset anything at a global scale, and besides, they're on the decline too, just earlier in the curve.

Second, caring about your ethnic culture is not the same as "vilifying people of different skin color and continent of origin". It's just not treating nations as comprised of interchangable consumer/worker units whose shared culture and history (or lack thereof) doesn't matter.

Most countries have a long history tied to a culture created from one or a handful of ethnicites, they're not just pieces of land for settling associated with a civic contract, like the us has been (and of course even that came at the erasure of the native cultures and populations).

>"We are too many" as an argument to keep borders closed and "we are too few, get more kids" are incompatible arguments

They're totally compatible if you don't treat people like interchangable units arbitrarily exchanged, but as humans with a past, a history, an ethnicity, a culture, and so on, they've build over time.

Same way you wouldn't just exchange one of your kids with another kid, but that doesn't mean you think the other people's kids are inferior.