Other trackers don't have a backdoor into a global network of a billion iOS devices in order to relay the device's location to a cellular network, and thus, the

Other trackers don't have a backdoor into a global network of a billion iOS devices in order to relay the device's location to a cellular network, and thus, the original owner. They were safer because they were small; things such as this do not always scale linearly, which is a fact Apple's leadership doesn't seem to respect.