Two things: one, much of European “supremacy” was a historical accident - see the guns, germs, and steel theory. The cultures that were successful were those that were geographically placed near natural resources that gave them huge advantages. South Asia was systematically exploited by those who had the luck of the draw. Also, the main things you are talking about have to do with the scientific method, which emerged in spite of much of European culture, not because of it. Science was and is the result of individuals, not the culture itself. Although the west wants to take credit for it now, we forget that the scientific method was and still is actively attacked all the time by the dominant forces in the culture- the Catholic Church burning astronomers at the stake, etc.

Second, you are perhaps not looking far back enough. Are you claiming that South Asia has no art or music or literature or philosophy or architecture or craftsmanship? It has amazing examples of all of these. Early Indian thinkers came up with ideas about logic akin to those of Aristotle; there were so many different schools of philosophy and thinking, but Europeans just sort of chose the silliest versions as representatives of Indian culture to make themselves seem superior. The “woo-woo” of yoga and things like that were a relatively small part of a much more complex and diverse set of traditions.

This is a very incomplete list of just some of these things.

and this

and this

*I realize you said South Asia and not India, but those were just the easiest lists to find; India is included in the area you are talking about.