People only judge others’ choices when they’re insecure about their own. This is so common around food, but I’ve seen it play out among my friends who are parents as well. People who are secure in their choices don’t comment on others’ and don’t generally feel judged for their own decisions.
I get this a lot around my pescatarian diet and my running/workout schedule. It’s frustrating and I wish more people would take a ‘live and let live’ attitude.