The objective is to show that some people are receiving - and most likely will receive - notices like this, regardless of vendor. Another member did give the following consolation regarding this issue, though:
"I’ve had this happen with fragrances sent from overseas, they cleared customs and then were flagged by FedEx as “hazardous material” and I had to go pick it up at the airport fed ex in person."
So, it could simply be related to that, and have nothing to do with the post topic. Though, the volume of people receiving a similar notice is concerning given its relevancy.