The recent increase in arms sales to Taiwan is in direct response to China's expansive border efforts that should be understood as what they are acts of militaristic expansion, and in this way China is leaving the US with not many other choices. Far from the imperialistic tendencies of China's foreign policy in the Belt and Road Initiative, or their ever expanding claims in the South China Sea, China is now buying land around Japan, clearly hoping to surround their adversarial neighbours, such as Japan and Taiwan. Going to war or setting up US military bases directly in Taiwan are too brash and probably would not have good outcomes, therefore arming Taiwan to be able to defend itself is probably the best course of action for the US to contain this Chinese military threat.
colombogazette.com/2020/12/29/japan-concerned-as-china-is-buying-land-around-tokyos-military-bases washingtontimes.com/news/2020/oct/13/china-poised-to-attack-taiwan
This isn't simply an issue of weapons sales, in 2020 the US publicly confirmed the deployment of US Marines in Taiwan, the first public recognition of military exchange with Taiwan since the cutting of official diplomatic relations in 1979. China’s military actions and expansive territorial claims in the South China Sea are in a way a justified defensive response to an increasingly aggressive web of a US military bases and armaments of China’s closest neighbours, the closest being Taiwan. The US maintains 700-800 military bases around the world, many of which surround China, and many are in countries hostile to China. The American military industrial complex is now so out of control and so embedded in the government, the US is willing to risk nuclear war with a powerful adversary in order to curtail the growing power of their only global competitor. By arming Taiwan the US is looking to continue their global empire, while benefitting one of their largest manufacturing industries, arms and military equipment.
globalresearch.ca/the-worldwide-network-of-us-military-bases-2/5564 popularresistance.org/no-foreign-bases-challenging-the-footprint-of-us-empire anti-empire.com/us-troops-step-foot-in-taiwan-for-the-first-time-since-1979-recognition-of-one-china-formula msn.com/en-us/money/markets/china-expected-to-surpass-us-economy-in-2028-analysis/ar-BB1cfsIH?c=11419836265968585248%253Fmkt+ cnbc.com/2020/02/28/musk-says-chinese-economy-will-surpass-the-us-by-two-or-three-times.html asia.nikkei.com/Economy/China-to-overtake-US-economy-by-2028-29-in-COVID-s-wake-JCER