>>that the USA would cower and wouldn't support Taiwan at all.
At most that would only last 1 election cycle, so they would have to unify and hold it fast, very fast. Any Administration that would allow China to take over Taiwan would surrender (rightfully) all their political power and be ousted by a landslid the next election
I think you'd be surprised how quickly we'd get over that. Regardless, if we abandoned Taiwan and it fell, there is pretty much no chance we'd invade several years later.
At most that would only last 1 election cycle, so they would have to unify and hold it fast, very fast. Any Administration that would allow China to take over Taiwan would surrender (rightfully) all their political power and be ousted by a landslid the next election