Hindi is not the only regional language that exists. But, certainly the most well known. Hence, Hindi shall be the most preferred once, assuming the....
Mother tongue isn't Hindi by default. Perhaps, imposing once mother tongue whether socially familiar or not is morally incorrect and unfair , for diverse democracy.
Historically, sanskrit is prominent among the Brahmins and the latter was prominent with the lower classes.
Ignoring the relevance and adaptability
In fact, pali Prakrit and etc; have less archaeological remains as compared to sanskrit. Hence, restoring sanskrit isn't an immediate need.
Most importantly, language should be a choice, and no social constructs should be created for it.
Creating such, is deny liberty!!
India is walking backwards towards the age of barbarism.
#RejectNEP