Most Indians who live outside India still call themselves Indian, even after living for more than 15-20 yrs in US and UK. So, what is wrong in Amitabh calling himself Chora Ganga kinare wala, after all he was born in Allahabad. Wouldnt a Marathi born in Delhi call himself Maharashtrian?
Also, if UP or Bihari wants to invite a politician for Chat puja, it is their prerogative, Raj cannot say who they can or cannot invite. Similarly if a Maharashtrian does not want to invite Sharad Powar for Ganesh Puja, thats their prerogattive!
Raj is bigot, who basically jealous of outsiders doing well in Mumbai. He is now trying to find reasons to justify his hatred.