Respected Shri Nitish Kumar ji,
Hindustan means the land that lies between the Himalayas and Indu Sagara or the land of Hindus not the land of Hindi language. Linguistic division of states was done with the wisdom that all languages in the country will have same status even though there may be big differences in the populations that speak them.
Respectfully request you to avoid such banal statements as there are many states with their own language, literature and culture associated with it. -Sadhguru