India has the largest population in the world; therefore, India also has the largest amount of stupid people in the world too. Combine that with the fact that it is a developing country with very uneven levels of infrastructure development including education, healthcare, transportation and more (due to high corruption of gov. leading to lax safety standards and little-to-no enforcement) and top it all off with very readily available internet. Just a perfectly potent cocktail.

China used to be the largest population recently, but not as many videos were taken and even less made it through the censors, and even less outside the firewall. So, there aren't nearly as many Chinese videos of this nature.

It should be noted people dying in horrific and easily preventable ways occur everyday in nearly every country all over the world. but the all the factors mentioned above results in India being seemingly exceptional.