I don't know but I have seen parents of new born babies become very scared of kinnars and they give away whatever they want. Not for blessings but they are scared so give them money. In this show the way Harak Singh gave money to kinnars with so much happiness this is not the whole scenery! People actually give them money they demand being afraid of them.
And I have read some news that they often kidnap normal babies to add them in their community as it will bring them more money.