It's important to note that the above use of "anonymous" is laughable in context.
In order for that uploaded data to be useful by Apple, it needs to maintain both the lat/long and wi-fi access point ethernet addresses & signal strengths. This is pretty much a globally-unique identifier.
Identifier of what, though? The two data points you just described identify the wireless network, not the iPhone. In fact, what you just described is precisely the data required for obtaining a device location from the nearby wireless networks, a la Skyhook.
It's important to note that the above use of "anonymous" is laughable in context.
In order for that uploaded data to be useful by Apple, it needs to maintain both the lat/long and wi-fi access point ethernet addresses & signal strengths. This is pretty much a globally-unique identifier.