Taiwan needs support yes, but the US isn't helping. Poking China by sending warships to patrol its borders makes us the bad guys. If China did what we do we would have WW3 instantly.
The us is navigating international waters that China is trying to claim as theirs in fact they claim territorial waters from all their neighbors international treaties be damned. Thus they are in conflict with everyone around them.
It almost sounds like you are saying that if China sailed ships in international waters it would start a war. They do that all the time, and have been doing so for decades. Did I miss a world war?
Before there is an inevitable response “But, China doesn’t patrol 100km off the coast of US” - yes, also China has no allies with defense treaties near US, ie Mexico and Canada. In fact, China has just one ally - North Korea.
