More likely that they will push a 4th shot over masks. More money in it!!
I’m happy with whatever keeps people flying. If it’s masks, so be it, same with boosters. Having said that, and mandate needs to be accompanied by a full scale enquiry into each states handling over the last 2 years, as well as a guarantee of criminal charges if a premier/cho has denied an Australian their rights (ie access to a hospital for critical surgery…ring any bells?)