I am surprised that this is even news to people. Fire OS uses Wi-fi to set timezones (which means, by just knowing the BSSIDs, Amazon can pin point your location). Similarly, IP Addresses, if you have tolerance for error, can pretty much help you gauge (coarse) location as well.
It goes without saying that the OHA-Android [0] is a data mine for Google already. With M, they're really upping that game [1]. Far worser things to worry about.