Strong rhetoric aside, you can't pick and choose, saying Maurya or a Nehru or Bachchan or Diwali are 'ok' but we don't want those other uneducated yokels. You have to deal with the good with the bad, the rich with the poor, and work to improve the situation from inside out collectively. UP's problem is Maharashtra's problem and UP's strengths are to be used to the benefit of Maharashtra's. That's what being Republic of India is supposed to be all about. With regards to the disparity in UP, immigration has happened both ways, away from and towards UP-Bihar over time depending on the situation in the region, and there are all sorts of people who have immigrated there over centuries who are really not the original UP people. Nonetheless, this is there even in a USA where you have a New Orleans crowd illustrated during hurricane Katrina and a more elite group of Americans represented by say the Kennedys. Similarly the Bachchans or the Nehrus are UP, and so are the rickshawwalas; and people need to come to terms with that.
The irony with Raj Thackeray is that he too belongs to same community as Bachchan. He too is paternally a Kayashth. And Kayasthas are traceable to UP-Bihar going back to the Mauryan times. The individual now bashing Uttar Pradesh in Maharashtra is possibly descendant of original UP-ites himself. So instead of trying to emerge a national leader like a Narendra Modi or a Chandrababu Naidu, you have this Thackrey making remarks which are going to limit and chai