They're not similar in that sense. Apple has stated that they're not intended as a theft deterrent (standard corporate CYA), but they're still useful for stolen

They're not similar in that sense. Apple has stated that they're not intended as a theft deterrent (standard corporate CYA), but they're still useful for stolen items. If somebody steals my backpack with an AirTag in it, I have at least a few hours before the thief alerted to the tracker. I'm also given a notification that my backpack is no longer with me immediately.