It doesnt need to be a secret but it also is something that should be on a need to know basis or in fact the right to tell (on the mother’s part). Not every birth is simple. There are women that strongly wish to have a natural birth but cant due to complications or multitude of reasons and end up having emergency C secs. The recall of “I couldn’t have a natural birth for no fault of mine” is tough on them n they dont need a reminder every now n then. There are yet others who have had traumatic pain or suffering during labor for a variety of reasons. When you see a baby and a mother, you have no clue if they have had a ruptured uterus or some crazy complication in the process, so it is a safe courtesy to not ask until told the details of the birth. I didn’t want to spell those things out but I guess some things need to be said.