The idea that White people are disappearing is a right-wing myth. I see many Mulatta women with basically pure-White looking kids every freakin' day. The only reason why White people are declining in number relative to all non-East Asian races is because of wealth, people in wealthier countries have less offspring due to myriads of factors.
Once other countries advance we'll see them trying to get their overseas citizens back to stop their own declining populations.
Gookmaxxing (SEAmaxxing and EAmaxxing) works because White people have lots of superior features like being the tallest race and having the most masculine faces, but even these couples don't produce that many offspring because of economic and technological factors and even Islamistan has seen declining birthrates among the younger generations. Only Darkest Africa persists with high birth rates but I expect that trend to buckle soon, Blacks will be the most numerous race only because we advanced the last.
Once Tinder + Wealth + Feminism + Better technology + Social acceptability of sluttiness kicks in Africa will be identical to Europe. Sure, Chad will beat Tyrone but reproduction will remain rare.
I don't buy the myth of "White genes being recessive", if a White man reproduces with a woman in Africa their offspring looks like what passes as "Black" in the West but these kids would
never pass as "Black" in Africa.
Daniel Lord (Hiding in my Room) looks super-Asian to us White people but in Japan he can actually play JBW and Japanese women crave his big White shlong, despite being a ricecel in the West. Black women respond twice as much to White and Mulatto men over Black men in dating apps meaning that they don't see Black and half-Black men as the same. If you're White half-Whites look non-White, if you're Asian half-Asians look non-Asian, because most of us live in White countries and see White people every day it's easy to identify what looks "like the other", meanwhile half-Chinese half-Dutch children look "fully White" to Chinese people, while looking "fully Asian" to Dutch people.
If Black skin plus White skin makes Brown skin then it would be a fallacy to say that either gene is recessive, to both races the kid looks like the other race and we mutts will be rejected as "outsiders" by all groups.