It was also shown it was not a rumour spread by Arjan or old Mukhi or Raami. However good it is, it is still a village and it is bound be a bit more conservative.
Arjan is not planning to spread the rumour but was planning to use them for his advantage when the time is right. For a change, it was shown that the villains are not omnipotent, omnipresent beings but rather cunning ones.