That's very true. Those shippers aren't protecting anything except for scuffing. For me more often than not the corners of the actual figure box are smooshed, or there are fairly sizable dents, like an inch deep by 2 inches long, along the box edges. Luckily the figure is fine, but I would feel silly asking Sideshow to send me another figure box because mine was dented in shipping.
I remember early on getting some figures from SS that had styrofoam tops and bottoms on their boxes, so the box "floated" inside the shipper. At least that gave a little bit of buffer.