* Out of twelve returned trackers, one of them went to landfill. The article focuses on that item and does not itemise the fate of the others.
* Adding a tracking device to a returned new product is tantamount to damage. If such a device is detected during returns processing, anyone with half a brain should immediately presume a malicious actor and have the item very carefully and securely assessed for disposal.
* Did not verify that the tracking device remained within the bag.
* "30-40 percent of online purchases are returned" what absolute hoopsla. I've worked in online commerce and this is off by an order of magnitude. A very few segments (e.g. shoes) may approach such return rates.
This crap is why journalism is in such disrepute.