China has their own ASML and TSMC, they are just behind. But not as far as the west likes to think.

The problem with US is that Google and finance pay engineers too much. They get the most talent so they can show you better ads and make better trading algos. In the US the government works against you, whereas in China the regulation burden is none.

South Asia sure, large quantity, low (average) quality.

East Asia if you include Japan and Korea has pretty good engineering talent, I'd say, lots of people would run circles there around US graduates, it's more that their economies are hampered in other ways by demographic shifts, bad investing environment (Japan mostly), and monopolies that don't innovate and control the government (mainly Korea).

Chinese engineering is pretty damn good now. But it takes time still to catch up to the highest levels of technology, but they have a government investing in its people, in its infrastructure, in its companies. The only question is whether the government will run out of money before the plan unfolds or the demographic time bomb hits.