I have 2 sisters and no brothers and I am from Indian background.
I remember whole of my childhood people asking me about my siblings and I telling them that we are 3 sisters and then them clarifying no brother?!
It's like I would remove brother from my sibling list!!!
Also my dad's brother has 5 daughters so we are like 8 cousin sisters in 2 families. You can imagine the gloom and doom that surrounded all of us!
In all of my family, us girls have done far far better than the boys and have been there for our parents, whenever needed. One of my sister and my cousins have managed to have successful careers in the same town where our/their parents live, so that they are always closer.
Now the same people who questioned all of our parents choices and independence we were given(even after being girls, the horror!), do not stop singing praises.
Now I am also having my first child(that too rainbow) , a girl, I am preparing myself to answer such people. I have had some passing comments but I am waiting for her to be out in the world before I start the war, lol!
I find girls far more compassionate and are closer to their parents, especially in South Asian context. They see their parents combating the prejudice, it makes them stronger too.
So don't worry about it and don't let the comments bother you. People are set in their ways and cannot see beyond what they have seen/experienced. It is on us to ensure our daughters are strong enough to stand up to such prejudices.