I find the idea interesting, but the tone of these 'nappy-free' articles slightly grating, with their implicit reproach ("If you were a really good mummy, you would intuit your baby's every little wee-wee").
I suspect that as Issymum suggests, mothers who manage without all these trappings are still using cloths of various kinds to mop up the inevitable accidents. When we lived in Africa, where babies are carried on their mother's back for long periods I seem to remember various cloths being used around the babies' nether regions, though that was in my pre-child days, so I didn't notice the details the way I would now.
But dd2 is nearly 20 months, so my nappying days are hopefully pretty limited. Hurrah! And then i need never care again what arrangements people make for their babies' eliminations.
Issymum, sounds as if your dd's are doubly lucky in having great adoptive parents and good pre-adoption care. I have friends who adopted two children from Bulgaria, who were by no means 'radiantly well' when they arrived here. Hopefully those images of them being loved and cared for in their pre-adoption lives will help see your dd's through the difficult questions about adoption.