True it's not so much meant for an issue creating segregation as it is for comfort. Single parents can use this restroom without issue. Trans, handicap. appropriate sized stalls, changing tables, etc. I just see the family bathroom in theory as an environment that could invite a subtle unity. Since everyone entering is different, there is no focus on it as "odd". Those who are more comfortable with gendered bathrooms can be free to use them without issue. All that counts after that point, is cleanliness, functionality and appropriate accessibility.