Allowing Taiwan to fall would dishonor the hundreds of American AND Japanese lives lost to take Taiwan during Formosa Island FORMOSA AIR BATTLE of 1944 . This is equivalent to America giving up IwoJima to China after taking it from Japan

Let territory fall into enemy hands after spending thousands of American soldiers lives on it in ww2 if you really want to piss off some military ghosts and invoke the time traveling 1950s 60s even 80s us military watching this ambaraesmenet of a time line unfold.... to send some people to the future Andrew d basiago style lol

https://en.m.wikipedia.org/wiki/Formosa_Air_Battle