I mean right on its face it sounds ridiculous. White people are not indigenous to north america. Their arrival was essentially an apocalypse because they brought severe disease, disrupted the patterns of nature that the indigenous people studied and lived with, and brutally killed the indigenous population. It is nothing short of disgusting to think people who brought mayhem and destruction to land they stole should get to decide who does and who doesnt belong on that stolen land
But thats the power of white supremacy. It creates a delusion in the mind of white people and a type of racial narcissism and solopsism. Racists see themselves as the only true humans and everyone else was a mistake that our creator made on the path to creating white people. Losers who have nothing, cling to something they had no control over as a thing which they can use to feel superior to others and to lock them out of opportunities. They dont want to play basketball unless the hoop is lowered so they can dunk but then made higher for everyone else. It makes them soft, it makes them weak, and it makes them insecure. Shared hatred for those unlike them and the joy they get in making others suffer allows them to feel big whilst the rest of their life crumbles around them.
As I said, they want a white ethnostate. They want America to be an ethnostate like israel. They want people to say "america has the right to exist as a white state" and its a big part of the ride or die loyalty for israel. Its a proof of concept for a white ethnostate and so long as it exists, they feel justified in trying to turn america into something like that. Just like Palestinians were expelled, the goal will be to denaturalize, revoke citizenship and expel everyone who isnt white in America. If they deport people like Ilan Omar and zohran mamdani that will be one of the events written about in history books as the precursor to the second American Civil War which will answer the question of who is allowed to have citizenship in america.