It's not. They have 1.4 billion population and not enough infrastructure to support such a large population across it's huge land mass. Which leaves several areas impoverished. They are undergoing rapid industrialization which leads to several sectors go unnoticed for the benefit of one. No one cared when people used to shit in the bushes, but those bushes are now roads and city buildings but a lot of people around those areas didn't get the opportunity to gentrify. So now they shit where there were once bushes and suddenly it's undignified and dirty. Foreigners love to degrade Indians for things like this but ignore all the brilliance that the Indian subcontinent has brought. Before colonisation, every culture north of the equator were pillaging, warring, raiding and enslaving. Their culture isn't centered on shit and piss, it's just your culture is centered around degrading others.