AH Dick, The entrenched ex RAAF fly boys of the 1960/1970 era in the bureacracy now set the standard, (a) They don't like light aircraft , period and (b) they absolutely believe in sterile controlled airspace no matter what the risk assesment is or how much it might cost.
There is not a commercial bone in their bodies and they really don't care if the flying schools grind to a halt.
The notion that holding early low time pilots OCTA in the concentrated space adjacent to designated GAAP airports is safe defies logic, and to be then assured after clearance is granted to the GAAP that they are mystically separated is fallacy.