^ For one the majority population does not have any religious reasons for not accepting family planning
Family Planning
…Ironically, several studies in India have found that economic compulsions drives population growth rather than religion. …In India family planning is linked more to literacy and income levels. …If there is relatively less family planning among Muslims it is because of poverty and lack of awareness than religion. Those Mullahs who come from the poorer strata (and most of the mullahs come from this strata) do invoke religion for opposing family planning but it does not mean all Muslims necessarily listen to them. …A section of Indian Muslims (mostly the uneducated, illiterate and financially and economically backward strata) consider family planning as un-Islamic though it is practiced in many Muslim countries. …
You are taking the joke too far but your own quoted article reveals that if Muslims in India do not practice birth control, it is not because of religion but because they are financially backward and illiterate, which is the topic of the discussion.