That seems to me to be the unassailably correct answer to the question.
The next question is:
If there is scope for pilots to exercise the discretion in different ways in the vicinity of the same uncharted aerodrome, is that ‘safer’ or ‘less safe’ than if one frequency e.g. the applicable Area frequency - were mandated?
It seems to me that the unassailably correct answer to that question is: ‘less safe’. Do you agree? That was the conclusion to which CASA came when it mandated the Area frequency and defended the decision in the face of reports to the ATSB.
So the next question is:
What is the justification for the change? It can’t be ‘safety’. Is it that the original mandate was ‘unpopular’?