First of all, the image shown has nothing to do with joint issues weight maps are supposed to help with, so I don't know why you show it if you hate to show it.

Second - I use PMD as well, and it's a great tool. I have used weight mapped figures too, and I like that I don't have to use PMD to fix them. I can create conforming clothes for weight mapped figures without much efford, without Wardrobe Wizard or some other fancy tool, and they work quite well. And is your argument really "Poser does not need weight mapping because there is a tool you can buy to fix the joints with an external mesh editor" ?  

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.