I love both Knives Out and Glass Onion and the thematic parallels throughout the stories. I also think it's important to learn that Marta would have never won getting angry and throwing things, and Helen would have never won with kindness alone however not only did they get their happy ending by "playing the game" their own ways, there were places where Marta needed petty revenge and Helen needed kindness (ex: Marta lying to Ransom about Fran not surviving, Helens kindness to Wiskey.) I just think it's important to learn there are times and places for BOTH unconditional kindness and fighting back.