So where are they going?
It was easier for smart Germans in the 20s-30s: they could just go to America, or maybe Canada. It was easy to get in, it was industrialized, etc.
Where are smart Americans going to go now? There really aren't a lot of great places to flee to. You could go to Canada, but Canada is basically joined at the hip with America. If America's economy tanks, Canada's goes right with it, and Canada seems like they're usually echoing America's moves. You could go to the UK, but they're even worse: the pay for tech workers there is atrocious (like half of what you get in a decent tech hub here) while the cost of living is insane, and they're busy trying to turn themselves into the place envisioned in "1984". You could go to China, but you'll need to learn Mandarin (no easy feat) and wear a gas mask at all times because the pollution is so horrific. You could go to Japan, but you'll need to learn Japanese (also not easy, but probably easier than Mandarin), and they're really not that welcoming of foreigners, nor are you likely to get a great tech job there. Plus with Trump in charge, America might pull back on their support of Japan and China could end up taking over the whole region. You could go to western Europe, like Germany, where it's not so hard to learn the language, and it'd be easy to adjust to the culture and food, but they don't seem to be that interested in immigration from America for some reason so it's not very easy to get in. Plus they seem to be having a lot of problems with unrest and terrorism lately, and are busy electing their own far-right demagogues that look much worse than Trump.
I do read about American expats living in places like Cambodia, but I can't imagine that places like that have much to offer experienced tech workers. Perhaps Australia?