Why is Kangana Ranaut taking digs at Diljit Dosanjh?

They are at it again. Yes Kangana and Diljit are again in a twitter war. A few days back they had a burning convo on twitter and today again it has begun! Diljit Diljit has released a new song on Rihanna after tweet on farmers protest. Kangana has a opinion on it as always and now they have gotten into a twitter banter again! Kangana apparently thinks Diljit is doing this for '2 rupees money' Why is Kangana taking unnecessary digs ?