I think that if China attacks Taiwan, your argument will turn out to be quite wrong.
The chances of China attacking Taiwan are greatly enhanced with Joe the idiot pretending to be in charge.
Why would you say that?
The United States has recognized Taiwan as part of China since 1983, and arguably since 1973.
No US President, and certainly no US Congress, since then would even contemplate war with China for a second over this internal Chinese affair.
Not to mention that China "conquering" Taiwan is going to be like Germany "conquering" Austria in 1938.