I know exactly what you guys are saying, it works out really well with the way the case is attached to the face frame.
The top drawing is the one to focus on, with the stile being 1 1/2 - 3/4 of the ply leaves 3/4 to play with. The key measurement and placement of the dado is to have 1/2" to the inside of the cabinet, this allows to use drawer spacers to properly align the drawer slides. Which will leave a strong 1/4" of the outside of the case which on a finished end will leave the room to contact cement a piece of 1/4 ply or allow some room when installing when going cabinet to cabinet.