It's all about keeping the status quo re the classification so no change has to be made.
That's because it's clear on the ATC side of the RAAF there is a shocking lack of personnel with leadership abilities who can make change,
If you're not satisfied with findings of the 133-page CASA/RAAF joint study into the Williamtown airspace, then perhaps you should fight fire with fire. Commission an objective, independent study that avoids hyperbole and is based on the facts.