That is such an absurd statement to make. To understand how absurd what you're saying is replace Taiwan with Texas or Hawaii and replace US with Russia or China. Then tell me with a straight face that US would allow this level of interference in a US state where Russia or China would groom politicians, sponsor movements via their state orgs, and send weapons there. Last I checked US liberals are still losing their minds over the fact that a Russian oligarch bought a few 100k worth of Fb ads during an election campaign. What these links show is political interference on an incredible scale, and the kind US would never tolerate in a million years.

And don't pretend that this is about spreading democracy, it's about spreading US hegemony. US doesn't even have democracy at home, how can it possibly spread it anywhere else:

What do our findings say about democracy in America? They certainly constitute troubling news for advocates of “populistic” democracy, who want governments to respond primarily or exclusively to the policy preferences of their citizens. In the United States, our findings indicate, the majority does not rule—at least not in the causal sense of actually determining policy outcomes. When a majority of citizens disagrees with economic elites or with organized interests, they generally lose. Moreover, because of the strong status quo bias built into the U.S. political system, even when fairly large majorities of Americans favor policy change, they generally do not get it.

Having a foreign power take over and run your government isn't what self determination is. Self determination fundamentally starts with having sovereignty, and having a foreign power drive your political system is literally the opposite of that.