There is an essential information you are missing here.
India once had a very scanty population. Very scanty.
We are talking about a population smaller than European countries living in the entire South Asian region.
My school textbooks showed that population growth rates were even negative during the median years and later years of colonial rule. And low life expectancy, high rates of mortality and disease, and frequent famines have been the case in Mughal days and in the distant past before.
It was not until the 1960s that improvements in medical care, gradual shift to food surpluses, and general improvement in sanitary conditions led to an increasing population.
Now remember, just because population is scanty does not mean that people are living far apart. On the contrary, poverty used to force people into much closer proximity, with far more people under one small household, so that all necessary things were within even reach. And hence, the squalor was even greater, with more congestion and less sanitation. There would be only one toilet for hundreds of people.
As population increased in the 1960s, the population densities of Indian villages, towns, and cities decreased, as people could afford to move further apart, and live separately. It further contributed to reductions in unsanitary conditions, and thus increasing population. It is a misleading figure cited here that the poor got poorer in the 1970s. Rather, the poor started living longer and healthier lives and started coming out of poverty, and another generation of poor could also live longer and plan further for their family’s future as their savings accumulated.
I am personally glad that I am not from Hindu background. My parents originate from the forest-dwelling peoples of Jharkhand, who were not part of the authoritarian Hindu culture practiced in towns and villages. Furthermore my mother had a Christian upbringing in a Catholic school, and my father went to militantly secular army school. We were saved from Hinduism. You will notice that the only groups highly successful in Indian society are non-Hindu minorities - from Marwars to Chettairs to Parsis to Shi’ia Muslims. Parsis used to be the complete business class of India, apart from being high level political leaders in the British government. Marwars and Chettairs created business empires across South East Asia and Africa. Muslims are disproportionately highly represented in Indian entertainment industry. Hindus destroyed themselves in achievement. And the only Hindus who achieved much were Kashmiri Brahmins like Jawaharlal Nehru and Indira Gandhi, who only served to further ruin the nation, and were just career politicians with greedy agendas without the enterprising spirit of Marwars and Parsis.
Christian Western Civilization is the greatest thing to happen on Earth. Don’t let anybody tell you otherwise. If you don’t believe it from the mouths of Western chauvinists, do believe it from the mouth of someone who saw what happened in the world outside Christian Western Civilization.