Almost like we replaced a system (CTA v OCTA) that suited the Australian environment with a system developed to fit a differenet set of circumstances.
WHY would US ATCs provide IFR to IFR seperation in G when it is not a requirement? Because there's not much of it, and they have the resouces to do so- so Alphabet works in the US because ATC go above and beyind its' scope.
The idea that a system was introduced that only works when key players do other than what the system is actually designed to do would seem to be a flaw.
Now, on who's watch was it instigated?