So all is forgiveable in the name of more industry?

Is one country supposed to bear the burden of blame because every other western country moved their manufacturing there? If the rest of the world didn't turn China into a manufacturing hub they wouldn't be polluting that much now would they?

Including Chinese slave labour?

Now that is something you can criticize.

China produces a lot of cheap plastic shit and textiles nobody asked for

China produces a lot of cheap plastic shit because there's a lot of international demand for it. The shit that ends up on Temu is the outcome of overproduction to meet the estimated demands of the foreign markets. If you want to blame anyone for China producing a lot of cheap shit, blame America who is their biggest importer of cheap shit.

but they only recently became competitive in high tech after stealing from other nations like Taiwan and Korea.

And that's another thing you can criticize. As far as I know they've (allegedly) stolen DRAM technology and to that my answer is fuck the DRAM cartel. If stealing their tech is necessary to break their stranglehold on the memory production then I'm all for it. The reason we're currently in the middle of a memory crisis is specifically because the 3 biggest memory manufacturers somehow magically all end up with similar RAM prices to a point where one of them deliberately shut down one of its fabs because RAM prices were getting too cheap.