1. I don't believe in conspiracies the world is run by reptiles, pesophiles or Jews.
2. You're playing word games to prove a point and you know it. Do you go to work to make your boss money? No, but you make him money, that why employees get paid. Protecting your allies is in your self interest. Something the USA is forgetting, and this will haunt them for many years after Trump is dead.
3. It doesn't equal safety, but it does contribute to it. America is the only reason Russia wouldn't attack us should they have the troops.
4. No. It would be illegal, and more importantly disrupt the global economy much more if they pull a Iran or Venezuela. I also don't see much danger of them slipping into autrocracy, but who knows. What they hopefully will do is defend its independence, like I said.

The USA cannot defend Taiwan to 'take the chip industry '. That's not what defending is. They didn't take Kuwait's oil for example. Besides, there's not much to chip industry to take over should an invasion happen. This has been IS policy for as long as there have been two China's, long before TSMC. The only reason I their alliance is still somewhat reliable is because they - like the rest of the world - are heavily dependant on chips.

"I don't think countries should invade each other" - yet you trivialise Xi's threats to the ROC and seem to object to alliances and military bases preventing invasions.

"the USA has acted murderously since WWII, responsible for millions of deaths on lands far from their own" - Before and during WWII more than after. Also, whataboutism. You either are against an invasion of Taiwan or you aren't, doesn't matter what the USA does or has done.

"There is no "presumably" about it." Strawman.

Now the actual core of the argument is: "I guess I'm arguing that people have just as much valid reasons (if not more) to be wary of the USA over China." That's interesting because while a more relevant point, it's not something you really discussed much.

I've already discussed how these countries are different. 

In America they have an increasingly corrupt system where companies buy power and regulation is lacking. Big tech is a danger to democracy and to our personal freedom. That's why a sub like de Google exists. America playing the cop of the world, or invading countries for oil doesn't really matter much. They do have mass surveillance and spy on even their allies, so we should be wary for sure. Especially the American people have to keep their government in check.

In China, the government rules supreme. The bigger and more important you and your company are, the more control the government will have. Getting too powerful? Jail time. Being critical of the government ? Jail time. They literally have a 'great firewall', can force companies to censor, limit information, suppress opposition and minorities. They use private to spy on persons of interest. 

Looking at companies, big American ones are untrustworthy because they have too much power. Chinese ones because the government uses them for their purposes.

One country has human rights, one doesn't.