You are extrapolating from N=1 to a state of 36,000,000 people. Your experience is not the guiding star for state-wide policy.
Also consider this... the people who work on this stuff, have spend years and years on this stuff. Perhaps... they... know what they are talking about?
As someone with a kid, introducing subjects before kids are ready for it is counterproductive. It can cause confidence issues later, and doesn't help them learn earlier. By way of a small example, try to teach a 3 month old how to walk. Good luck, you aren't doing anything useful.
Now back to the immigrant thing, by now you surely must have realize you are in the upper X percentile of your peers from India. There are many many many, in fact most, Indians, who cannot do what you can do. Not even close. Basing educational policy on what you found easy with your Xth percentile intelligence is not going to be a great idea.