Honestly sounds more like basic probability—splitting up large families into small, isolated units.

I tried searching for what you’re talking about but couldn’t find anything other than stuff like “white nuclear family hegemony” vis-à-vis the tax code.

Maybe I’m just a dumb redneck who grew up around too many white supremacists. Who knows anymore. I feel like if somebody thinks white people are going extinct due to small family units they can just say it on the Internet.

Personally I’d love more cousins.