If you take a look at the above pictures you will see that they are cardboard shipping boxes. There have been pictures on AH and on other forums where clients received damaged taxidermy were the finished goods were placed in cardboard shipping boxes.
While your and my shipper may used Plywood for shipping boxes that does not mean that every shipping company does so. That is the hunters responsibility to ask the questions and request containers that your product will not be damaged in. Weather you want to admit it or not, you get what you pay for. Shipping boxes that are made with plywood will cost more than boxes made out of card board. So in reality we do pay more and receive a quality product.
Maybe it is not that I pay more I just get more from using the right places. Plus maybe the company charged the same for that cardboard as I did for my plywood they maybe just made more. At this point we are both guessing just like you are guessing the guy ask for the crate to be built like that. Either way it is there job to get his stuff to him in one piece.
Many people at fault on this mess but it sure is not the client in anyway. I hope I never need a client to tell me to add another screw to something or use something that will not break to get the job done. People doing the work are hired to do a job they need to know how to get it done all on there own if they want to charge for a service.