i think theyve taken it too far. let kids be kids, boy or girl, let them choose what they like in life, nothing wrong with a boy with long hair or who likes pink, my son wants a doll and a pink handbag, doesnt bother me at all. But the whole, hide away what sex they are, just seems odd. This will no doubt cause those kids stress and upset which (i hope) is what the parents are trying to avoid with this strange decision.
of course, it may just be that the parents only wanted a girl and mother nature has only given them boys so they are hoping one kid will play at being a girl instead?