Buying a ton of stuff from China isn't necessarily a bad thing. It depends on the details. Things like specialization can be beneficial for everyone.
And the demographics in China are arguably more challenging than in the US (and the US is probably better positioned to address the challenges via immigration).
Our #1 'economics' problems is that we do not measure 'consumer surplus'.
If everything all of a sudden cost 1 cent to buy, the GDP would disappear, but the value to each of us would be immense assuming we could figure out a way to divide the surpluses evenly without a war.
Consumer surplus is variable, each of us 'values' things in different ways, but still, it should be on the books.
Inflation measures try to accommodate for that (aka stuff getting better) but it's hard.
My god man, I remember 'before Walmart was everywhere' and you just could not buy 'stuff'.
I remember in the 90's going to a big Walmart and thinking: "I could buy everything I ever needed here" if I didn't care about brand, keeping up with the Jonses. I don't think young people realize how revolutionary it is that we live with a super abundance of stuff. Particularly for working class people, it's changed everything.
We live in an age of material abundance - and now arguably over abundance (a different kind of surplus), and much of our problems are derived from that and how we align our finances.
We have to deal with the real estate problem, and, the massive increase in healthcare. Healthcare will be 40% of the economy in 25 years.
And the demographics in China are arguably more challenging than in the US (and the US is probably better positioned to address the challenges via immigration).