The contrast is really stark when you compare it to for eg. India, where 64% of the respondents earn less than $50k. And this is likely with a skewed sample too - 343 respondents, of which I'd bet most are in FAANG and FAANG-adjacent companies (eg. Flipkart). The actual percentage that earn above 2 lakhs per month (= $50k p.a.) is likely less than 20%, even allowing for a strict definition of a "Javascript developer".
Those numbers for India are way, way, way off, even more than you said. The average Indian dev working in TCS, Infosys or Cognizant isn't going to care about surveys like these. (Though, I don't know if any of these companies even hire too many JS devs?)
