istg no one who packages things to be shipped understands what shipping stuff actually entails. to them they put it on their porch or in the truck or whatever and it goes off, magic happens, and it shows up at the destination, maybe a little worse for wear.
meanwhile they're putting fucking disc brakes and weight sets in flimsyass cardboard boxes that can barely support the weight of the stuff inside em. and so the cardboard starts breaking down and becomes unable to stably support anything on top of it. and then when i have to put it in a wall there's nothing i can really do with it. can't put it on top, it'll crush everything under it. can't put it on the bottom, it won't be able to support anything.
and then there's the weird shaped boxes. L shapes, triangles, trapezoids, etc. just. put it in a fucking square box. it's not that much extra cardboard and it means i don't have to spend a whole bunch of extra time planning how to integrate it.
and then there's the downright nonsensical instructions and labels some of these boxes have on them. i have seen boxes with This Way Up instructions going two different directions. i have seen boxes labeled Do Not Stack(the fuck do you think we do here, huh?) i have seen boxes containing fucking sofas labeled Fragile Handle With Care.
honestly it seems like every other goddamn box is labeled with that.
and also every hundred or so boxes you'll run into one that just falls the fuck apart to some degree. with some of em, it's so bad that as soon as you go to pick it up it just kinda flops open and rips apart in your hands. so the best you can do is put it in a bin and send it down to QA to be fixed up.