>>106468491 (OP)
It's not enough to simply track down Indian contributors and rewrite their commits, though that should still be done. For long-term results, the actual project culture has to be inhospitable to Indian programming tendencies:
>No Python or React
Absolutely no Python or React Native "code" will be allowed in the project. Python should not even come preinstalled on the OS.
>Force C
C++ shall be permitted for GUIs but nothing else; the underlying code must be in C (or, when superior for memory management, Rust).
>Use assembly language more often
Assembly is no less abstract for designing a calculator app than C or even Python; the engine of the calculator app should be written purely in assembly language, while the GUI may be written in other languages. Other opportunities to leverage assembly should be explored.
>All communications must be in American English
Indians schools (very badly) teach British English, and I suspect their insular culture makes them less familiar with the spelling differences in American English. Meanwhile, Britons, Australians, and Europeans interact with Americans and absorb America's cultural exports all the time, allowing them to instantly adapt to an American spelling mandate. Users who fail to conform will be flagged as Indian.
This is off the top of my head.