Thank you! For reference, here’s the copy on their site indicating how their drives are shipped, this is MUCH more what I would expect (though technically this does seem to leave them the option of just using air pockets?) :

Our drives ship in 225lb per sq inch pressure-rated boxes, specifically tested for impact. Inside the box you’ll find suspension brackets, foam inserts, or air filled pockets that secure the drive in place and prevent any possible impact from movement in the shipping process. The drive itself is sealed in an anti-static bag that protects the drive from any electromagnetic interference.