I guess when is young and immature one jumps up to defend oneself or those we care for. In time when we mature we learn to pick our fights. I guess that was the case on the flight. To him the business class traveller was of no consequence. His words though can't be ignored which is why he merely asked did you say something. What the 4 idiots say or do however will affect Anupama or what Kavya said did matter to him so he puts them in their place.
If rakhee in the guise of empowered woman says or does something to be little anupama he won't spare her.
Vanraj or Baa have to be handled only by Anupama as she has to set the boundaries of what she will tolerate and how she will respond to it.
Anupama s relationship with them is her choice. He will not allow Kavya or for that Devika will not allow Kavya to trample over Anupama.
People's meanness quotient is something that will keep surfacing does one allow others to insult or do we set boundaries is entirely left to us. If Anuj reacts to Baa or Vanraj it will be interference. He refers to Baa as Baa treats her with . Anupama started speaking up to Baa and has said she will not give explanation again. She doesn't have to produce a conduct certificate to Vanya.