China doesn't even let its top supercomputers enter Top500 ranking, operating classified top tier system is literally the standard MO for literally everything else China does when it comes anything security related.
China won't even allow export of solar manufacturing tech, and China is notorious for being extremely restrictive when it comes to advanced weapons exports, what makes you think China would actually not only export but give out for free the most advanced cybersecurity tool on day 1?
But I do understand the idea that after all this time America isn't even competing with China's best would be extremely demoralizing for Americans, so there's naturally a lot of incentive to choose to believe Chinese labs are just casually dropping SOTA models open-weight, with papers published detailing how they did it, within weeks of every American release purely by coincidence for the love of the game.
I mean, you do realize Opus 4.8 is only 6 weeks old, and GPT5.6 is only 1 week old lol