I agree with everything you say but I'd just add the caveat that a lot of libertarians equate essentially any law that restricts anything with the dystopia you describe under than banner "authoritarian," and I don't agree with that classification. I'd be in favor of some limited laws to promote general wellbeing, such as mandating that pornography be an opt-in thing (as I hear they do it in Israel).

But I do agree with your basic idea that a China-esque neo-fascist state would be a nightmare, even in a white ethnostate, and even if it remained non-imperialist (a big if). Albeit less of a nightmare than the diversitopian high-tech police state that awaits us.