[fragmede]

It's not, but (presumably) you're hearing about your one mentioned data point from a biased subset of people from India in English. How many people who didn't study English in school and dropped out there would you even have a chance of having talked to?

And that's not to say the behavior doesn't exist in the US, just maybe in a different social strata or subculture than you're in. Specifically, the phrase "tiger mom" entered our lexicon due to a book written by a (ethnically) Chinese woman, but is not limited to it.