The Chinese tax payer isn't voluntarily helping you though, it's China's forced resource extraction from its own citizens (wage and QoL suppression), to maintain a stranglehold on global manufacturing. Everybody (except your specific car purchase) would be better off if they used these resources domestically. Do you think they'll ever want payback? if not from you, then from the next generations.

For the same reason countries don’t like it. It guts their domestic industry and puts you at the mercy of an authoritarian country?

I thought the last few decades of the US losing key industries to China was a lesson everyone learned?

Because over time when your own industries suffer and then become jobless, your country is less secure and wealthy.