It is refreshing to hear that face mask requirements have been relaxed in Victoria in most settings.
A quick bit of information for those in search for more clarity on the evasive answer of did I, or, do I, actually need to wear a face mask during the pandemic.
The Department of Health in Victoria clearly states that if you have a lawful reason you do not need to wear a face mask or require a medical certificate. Simply put if stopped you will be asked to explain what your lawful reason is.
Keep in mind, this is a totally separate issue to the mandatory requirements that are put in place by institutions, such as health providers.
The Australian Human Rights Commission is a good starting point for researching the fundamentals of this law and how to raise a matter, but you would have to specify your state based research after that.