Agreed....
And I guess.... PK's death could be a good reason for this revenge....
Yes he is taking revenge of his father's accident(suicide). Not Dhruv or Kavya. It is what shown in promo too. So he is now in the place of Pooja. But he won't go like her as makers want to show Pooja as villain and Kabir as saint. May be the show's point is to show u can take revenge in fair way. But PK died willingly so that Kabir wud avenge him. Otherwise until then Kabir was empathising with Pooja and blaming PK. He can't kill Pooja as Kabir will be his hurdle. His death wud make Kabir turn and stand against Pooja.
PK never changed and is always the bigger villain of this show. But just bcos his doings were of past and Pooja's doings are recent she is being treated as villain.