Yeah, I've seen articles that specify that these girls have a vulva and all the external bits, as well as a uterus and ovaries, so there'd still be a lot of plastic surgery needed to get us to where their starting point is. (Plus in two of them the vagina was anchored in place against the uterus, which probably helps.)
On the other hand, yes, the vagina is not the most difficult bit of plastic surgery involved in GRS. I do wonder whether even those of us who had the older methods could consider going back for an "upgrade." 🙂