It is a complicated process getting a passport when your gender has been “reassigned” or is transitioning toward being reassigned. Note how the picture you submit must “accurately reflect your current appearance.” I don’t think they mean a male/ex-female/transitioning-female should look like a male or that a female/ex-male/transitioning-male should like like a female. That would be hopelessly old-fashioned. I think they just want to make sure that those who are confused about their sexuality aren’t confused by the fact that a photo of you should look like a photo of you. That’s actually helpful instruction for those who look in the mirror and can’t see what’s there.