I see what you are saying.
I will agree that this halacha is probably something that would be balanced in halacha against other considerations.
I will disagree though, that the considerations you raise are valid. To whatever extent it is considered proper etiquette to allow a woman to walk before you, that is not a torah hashkafa, and is indeed anti-torah. And not because of tznius, Manoach (shimshon’s father) was criticized for walking behind his own wife. It is because men are more chashuv, they are supposed to go first.