No, guaranteeing the freedom of Taiwan is not a good thing. You clearly have no idea of the history and politics at work.
Imagine the Confederacy, supported by France and England, managed to flee to Galveston Island off the coast of Texas. Imagine there were still Native American tribes there. Imagine the Confederates, mostly of Scottish, English, and French origin, killed most of the native people living on the island and set about building a Confederate society there that they could use to eventually attack the Union again. Imagine the Union wants to go after and get final surrender from the Confederacy, but the English and the French being their war boats in to intervene, negotiate with the Confederacy, arm them, offer them protection, and then spend decades building them up as a legitimate alternative to the Union, building their economy, arming and training them, and propagandizing them and the whole world.
That’s Taiwan. Will get incorporated into mainland China. It has to. It’s a security threat otherwise, because it’s only reason for existence as a separate entity is literally for war. And the existential belligerent enemies of China are using Taiwan to advance their belligerence. Worse, the belligerent North Atlantians are willing to send every person on Taiwan into a meat grinder if it means weakening China and advancing North Atlantic goals.
Your position is built entirely on propaganda, false beliefs, and ignorance.