At this point, I guess I don't really care.

The reason china was able to do this is because of the free trade movement that started with Reagan to undercut US unions. US companies outsourced all the manufacturing as much as possible and china capitalized on the market opportunity.

Am I supposed to be mad that jobs shipped to china who steals a tech weren't shipped to Vietnam who hasn't stolen tech?

China is hardly the only country that has used internal policies and loose intellectual copyrights to get ahead (Famously, the US did the same thing in the late 1800s, stealing factory designs from england). And part of the reason US companies still do business with them is because they are cheaper.