U.S. blocks sale of AMD's China chip
fortune.com
fortune.com
So "everyone" knows that they can't sell these things to China. But investors have some wi$hful thinking that they can just legally juke the Commerce Department regulations.
I think NVidia and AMD are just posturing with these products, knowing they'll get slapped down by Commerce, so they can turn around to their investors and say, "Oh well, we tried..." without taking the stock price hit that would come with investors fully pricing in the China semiconductor embargo.
The primary reason most Americans would not care comes down to policy. There are thousands of things that we refuse to export to China, and adding a few computers to the list wouldn't raise any eyebrows. Both major political parties are strategically invested in Taiwan, so there is a bipartisan motivation to pass tough-on-China policies. It's definitely arbitrary, but not unwarranted; China invoked this through territorial aggression.
The rest of your examples would probably make even the least-patriotic Americans laugh. The right to self-determination is not an invitation to Maoist-Famine your entire population. There are humanitarian (as well as territorial and political) implications to a nation's actions, especially when it takes up arms against it citizens or defends a mistake of international concern. Very few remaining Americans share your anti-globalist mindset - tragically, the few who do are obsessed with American exceptionalism all the same.
I hope that could help. Words can't describe how nuanced the American national sentiment is, there are layers of secularism and faux-support that are overriden by completely different ideals. It's not much different from most places in the end though, I'd imagine.
The whole of the West is only two-thirds the size of China.
Give it 4-5 years till China is making chips the equal or better of AMD's chips, AMD and other Western chip companies will disappear. Enjoy AMD while you can.
At least, probably.