Telugu being replaced by Hindi in AP due to BJP's new education policies

Why is 3 language policy only applied to southern states? Why can't Hindi states like UP or Rajasthan have one MANDATORY south Indian language? That way they can contribute to national integration. Why should we import some persianized language from the north, which has completely killed any local languages it was mandated( Braj bhasha, Maithili etc). Is the responsibility of national integration only the duty of the non-Hindi states? Are we the vassal states of north who are going to silently accept replacement of our language? Even in remote parts of Andhra, it is getting harder for people to communicate without knowledge of Hindi.