I don't find these argument convincing
- hackers in Shenzhen are underrepresented b/c of the language barrier. There is actually a huge Chinese language ecosystem (a lot of it off Github on Gitee) that is sort of impenetrable but you come across it all the time. I said 10% just b/c typically I have no way to use their work b/c it's under-documented in English. If you zip around this map you will see lots of "Zh" islands: https://anvaka.github.io/map-of-github/
- Are Indian hackers working in Hindi and other regional languages?
- While I understand that it's not as financial comfortable for a programmer in Indian compared wtih the US or Europe, Chinese and Russian hackers aren't significantly better off. Your typical Chinese program is also of course worried about working for a big company and making money and all of that jazz
- "escape the hell that is 'unpaid open source work' " - I think maybe is the crux of it... Most people work on open source work b/c they enjoy it.. You're definitely not going to make a major github project used by other people just because you're looking to pad your resume.
Sidenote: I don't personally know anyone who got hired from a deliberate effort to build an open source portfolio. I wouldn't recommend it to anyone as a way to try to find a job