Qaiser Mangi

I am watching this show for its music, cinematography, splendour , lyrics and dialogue. 2 stars for all that. I am disappointed at the lack of research though...how come lahori tawaifs who are mostly punjabi speak in a pure urdu / lakhnawi style urdu ??? Someone explain please. It would be understandable if the story was set in lukhnow or Delhi. How can this be over looked in a supposedly blockbuster webseries....disappointing