Second response because I didn't see the entirety of your post the first time I responded.If he was just one racist wacko, his individual position wouldn't be very important, but because he tries to and does persuade others — many others — we have to consider implications and possibilities beyond his personal statements.
How has he proposed to stop or prevent more enthusiastic and less-principled[sic] exponents of his white superiority beliefs from extending his preservation concept to the forced migration he eschews, Or to limiting births, sterilization and forced abortions? Or outright extermination? All for the noble purpose of preserving the dominance the more important and valuable race, of course.
Not that you're defending his position, but without conjuring up a Supreme Being who has anointed that race, he and his defenders also owe an explanation of why that 'superior' race should be 'preserved' in North America or anywhere. For what purpose beside the selfish gratification of its members? After all, even the 'races' of inferior colouration have managed to survive for millennia, develop agriculture, art and science, exterminate animal populations and navigate the globe. Who says white-folks' massive global industrial pollution, littering of near-orbit space and obliteration of the ozone layer that once protected us from the sun and sunscreen is a good thing anyway? Whites?
What's wrong with just letting this stuff work out according to the same-old evolutionary crap-shoot as always? Who are white folks to tell us who they're gonna keep outta the country to stop my sister from marrying?
Sorry, of course I don't expect you to speak for him. Just consider that last to be more of my rhetorical excesses.
While I think Spencer has things wrong (and I suspect him of being a disingenuous provocateur), I have watched a number of his interviews (including the Kamau Bell interview). As I understand his argument, he approaches the issue from the simplistic perspective that "his people" were the ones to make the country into the place everyone wants to come to, so he thinks it would be ideal if the same people remained in charge and they perpetuated the same values in public policy. It's a selfish position from the perspective that he primarily cares about "people like him" (I guess with the rider that everybody else would be better off with his people in charge by extension).
It's a logically sound theory if you accept the premises that his people will always make the best decisions, or that they will be happier no matter how bad the results are of their bad decisions just as long as they get to make all of them, both of which I think are dubious propositions.