Kulturkampf

[Uncle]

if a culture completely overtaking another proves that all of their ideals must be superior to that other culture, from militarization to willingness to innovate to whether Sony is better than Nintendo, then if that culture believes that immigration-based "protectionism" (in the tweet's analogy) is not weakness but strength and proves superiority, then that idea would be superior to your supplanted culture which calls it weakness

if preserving your culture through strict immigration laws and deportation results in your culture maintaining global dominance, by your philosophy it would demonstrate the superiority of that set of beliefs