Mail thieves suck.
In NYC there seem to be a bunch of criminals who have keys to the USPS relay boxes* and go around the city pilfering large amounts of mail all at once. My entire (800 unit) apartment building’s mail has been stolen at least twice in the last couple years. But it’s extremely hard to catch them because they strike in different spots at random. The thieves in this story must have been particularly dumb to hit the same spot often enough that they managed to intercept this lady’s AirTag. I’d have to mail an AirTag to myself every day for a year to have a decent shot of catching our mail thieves.
*In urban areas where postal workers deliver the mail on foot, the USPS often uses curbside “relay boxes” that look similar to the standard blue USPS mailboxes but are painted green and have no slot. They stash the mail inside until they’re ready to deliver it to a particular block or a particular big building.