Well actually I heard there is a percentage of people that are the same with Vanja. As written they are a bit unfortunate as they need to decide to choose a gender, but do they lack legs or arms or ears or noses or mouth´s or whatever? Do they lack any skills other people are blessed with? Do they need special clothes?Can´t they decide to live in common with a society in which there are tall, short, fat, slim; blue, brown, green, black or multicoloured eyed; brown; blond black, grey, red haired; tanned, white, even albinos. There are so many properties. Imagine every of them were complaining and yearning for special status. Just because their chromosomes are different. and each of them would request different treatment. 
Isn´t that a bit an exxaggeration? I think they should accept themselves and make the best of who and what they are.