There's probably at 10-15% percent chance of a war between the US and China over the next 10 years. Maybe better than even chance of a militarized crisis that might have led to war, but somehow de-escalates.
Regardless of how sad late stage capitalism makes you, or how outrageous one claims to find "hypocrisy", any national security argument about limiting Chinese AI capability stands on it's own, at least for nations likely to be drawn into a war.
Also, all the local model enthusiasts who assume Chinese firms are going be allowed to endlessly release models if they have disruptive potential attributed to Mythos are probably in for a rude awakening. Just because the PRC is content about what has happened in the past doesn't mean that they would tolerate an open model that could be truly destabilizing.
As a third party I would rather be happy about the way Chinese labs are acting in the here and now while US labs first masquerade as a public good, then turn around, bail on all promises of open AI, turn into a corporation and attempt to own the world while its runner-up is trying to scaremonger people into buying their product.
I know most Americans are fed a steady diet of “evil China” and China MAY have issues. But on the AI front they are heaps better. Even if everything got closed tomorrow, we have a plethora of good models we can inspect and tweak while from the US labs we have… a single old 120b model ?
And with the way the US is treating its allies, maybe a bunch of us are quite content with a more even match rather than US hegemony.