Indian devs certainly level up fast, and I wouldn't be surprised if the number of great engineers born in India is already significantly larger than the number

Indian devs certainly level up fast, and I wouldn't be surprised if the number of great engineers born in India is already significantly larger than the number of great engineers born in the USA. But, and this is a big but: large numbers (the majority?) of those great engineers end up moving to the USA anyway. And, just as with evaporation, what's remaining is cooler than what left.