This doesn't really make sense, does it?

While I completely agree that the entire world has to be very careful about China, I do not agree on your stance on the tariff war.
China still produces so cheap the entire world would buy no matter what. Just the tariffs rise the price in USA for no good reason, making exactly those who cannot afford better quality (ie more expensive) products pay more.
If you expect this will make China lower their prices, you are wrong, since their margins were minimal.

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And to answer to the top question:

USA is a really big market. And this tariff war made everybody worry and reconsider their sales and growth perspectives.
But USA is not the only market and a lot of goods and services can be sold bypassing USA. It needs time, but it can be done.

Trump is the villain because he hurts the entire world with his amateurish gamble.
He will hurt the USA the most and China, Russia and N Korea already enjoy what they see. Of course, the Americans may need more time to understand that propaganda is not reality and to see that this indeed happens to them.

Sad times... good that Bitcoin offers somewhat a shield against all this, because the world is going down like Titanic, and Trump plays the role of the iceberg.