Earlier quoted context omitted.
This is not normal decoupling, we're in a full on economic war. In the short term that's terrible. In the long term, pain now will help minimize pain later when China invade Taiwan and US-China trade drops to zero overnight. It's coming sooner or later and the longer you leave your investments in China the more you risk the door slamming shut on your hand.
What does China actually stand to gain by invading Taiwan? Any kind of real analysis based in anything other than nationalistic fervor or fear mongering seems to indicate that they're better served by the status quo.
The United States' One-China policy was first stated in the Shanghai Communiqué of 1972: "the United States acknowledges that Chinese on either side of the Taiwan Strait maintain there is but one China and that Taiwan is a part of China.
Since then, the US devolved first to strategic ambiguity and then recently to supporting Taiwanese Independence in the Biden Era. The Chinese are not going to take it lying down. Nationalism matters a lot to Chinese - if you think this is simply a Xi endeavour, you are sadly, sadly mistaken. Even if Xi died today, the vast majority of the high command will decide to carry forth.
Unfortunately, War is generally a snowballing, self-fulfilling prophecy. Since the U.S. has now gained access to four new Philippine bases, China will be forced to respond as well. The game of escalation will continue until the final pin drops.
Personally, I really don't think super-powers should be stubborn. There should be new negotiations and there should b e a revised Shanghai Communique. China is unlikely to accept an fully independent island so close to their border though and will want some control over Taiwanese governance. Its too much of a threat to them otherwise.
If you think the position un-reasonable, turn the situation around and judge the way the U.S. treats Cuba - strong-armed and watched over by the Guantanamo Bay military base and sanctioned to death and you might get an idea of what China's starting negotiation position will likely to be.