The piece is specifically positioned as a retort to a somewhat sensationalist O'Reilly piece, and in that context it's perhaps decent. But this headline alone on HN is at least as sensationalist - redefining "your phone is tracking your movements between cell towers with a general accuracy of 2km or less" to "your phone is not recording your moves" is just newspeak.

Argue that the accuracy makes the data less usable for nefarious purposes, or argue the (much more pertinent to my mind) point that your carrier already has high-accuracy historical info and this really just puts similar historical info in your hands as well, point out that law enforcement can easily get the carrier info without ever even touching your iDevice, but don't try to claim that this is not recording location info attached to you.