Yellowstone director Christina Voros has explained how Kayce fits into the forthcoming Dutton civil war in season 5 part 2 after staying on the sidelines of his siblings’ conflict for so long. Yellowstone season 5 part 2 will see the conflict between Beth (Kelly Reilly) and Jamie (Wes Bentley) come to a close, while Kayce (Luke Grimes) currently sits on the side, watching his siblings fight. While his wife, Monica (Kelsey Asbille) has been confirmed to choose Beth’s side of the conflict, it remains unclear where her husband is going to definitively stand.

https://screenrant.com/yellowstone-season-5-part-2-kayce-role-dutton-war-explained-director/