> Besides that fact that many non-USA places are more leftist
While I agree with the statement about selection bias of immigrants, I have to take issue with this part of your claim. The countries most relevant to tech companies (India and China) are very nearly (or entirely, depending on your standards) ethno-nationalist. India is currently trying for demographic change in Kashmir [1], and I won't waste your time repeating the plentiful coverage of China's efforts to maintain their 91.6% Han majority.