Also, Blizzard, South Park, NBA are part of popular culture in the west. Cooperation with China is endangering that culture, so you see backlash.
Standards related to RISC-V are not part of popular culture and there is no danger of Chinese censorship. There is however danger of USA protectionism.
And yes - I can see Americans using microchip intellectual property against Europeans. EU is right there on the list of trade foes with China and Russia according to USA president.