My understanding is that the customs could legally destroy anything sent through it however they want without being held liable so this just feels like something that "could theoretically" happen that just happened to have happened...
An ultra-rare game with only 50 copies made was destroyed by US Customs on its way from Japan to the buyer
'TehKeripo' says the 1999 visual novel Tsukihime's floppy disk was removed from its bubble wrap and damaged, adding “Will file a report but literally crying right now”
Ohhhh now I sorta understand why there's (almost) always a huge "peel off protective film before use" sticker on the film itself for similar products...