I have not read it all either, but I note that there is a reference to the good safety record of model aircraft flyers, and their culture of safety.
It has been suggested that buyers of drones will have to register ( bit like the old Poisons register ), but GCPTN refers to drones built from components.
I buy balsa wood, ply, glue, fabric, motors, batteries, radio gear etc., all from different suppliers. It would hardly be practical to keep a register of all these purchases just in case I used them to build a flying model.