With the iPhone in particular, the problem isn't the cable, which is fine, but with the lack of a decent dock. Lightning connectors aren't much easier to hook up in a dark room than any other connector.
If you can find the depression of the home button on an iOS device, you know where the Lightning or 30-pin dock connector goes into.
I believe this has been the case with every iOS device (but not necessarily every iPod device, some of which had the connector shifted to one side or the other) since the beginning.
Hand a blindfolded person an iOS device and Lightning cable end, and they'd likely be able to put the two together fairly quickly if they've ever touched any other iOS device before.
It does suck for docks though, as it's not wide enough to balance on like the 30-pin connector was.
