Motherhood is something that adds reverence to a woman. She needs respect and especially when someone addresses a pregnant woman it becomes a societal thing but not personal.
Ranbir may crack any joke on his wife Alia Bhatt in between four walls and when no cameras around, but he fat shamed her pointing at her baby bump in public.
The couple may take it as a joke, but it didn't go well with many women.
It was taken as an insensitive thing from the husband towards his wife. It is in fact true that women shape out for a while while carrying a life in their womb. That should be treated with respect but not otherwise.
This talk happened during one of the live interactions for 'Brahmastra: Part One — Shiva'