I currently commute on a train 3 days a week into Sydney. My observations are close to 100% of those who are on the train more than 25 mins (i.e. further commute) wear masks. Of those with shorter journeys/live closer to the CBD it might be less than half wearing them now.
I will continue to wear a mask wherever there are numbers of people, including grocery stores, at least through the winter.
I avoid crowds too, which is also/more linked to deciding I generally don’t want to be around them in general any more. And I almost exclusively do not eat at indoor places/prefer outside when I do go places.
In the broader sense, as a society we appear to have wanted to stop thinking about COVID, even though the number of people who have died this year is already well above the past 2 years.