I would moot the idea that perhaps in a world conscious only of perceived polarities it is a good thing to have a few people around to remind society of the dangers in this type of monochrome perception of human beings. In telling others it gives them permission to intrude into very vulnerable areas, to expect a change of attitude from them to the person who has trusted them. In telling there is relief, but there is also great risk, potential destruction of all the artifice learnt in childhood in attempting to hide the dysphoria and live an ordinary life. In the case of someone who is post-op there may be a danger of being perceived as not quite a whole woman or man, again a marginalising dynamic. There are only two possibilities.
Sons are often preferred to daughters.
The midwife's statement seems written in granite and fails to see the person. Even the intersexed baby is assigned one way or the other. There is no free or advised choice. Equally the gender dysphoric person has no choice. Often there is a survival strategy through the adoption of a double life, or a fantasy life, in which all is perfect.