It does work accordingto the TGA, stopped millions from dying. The government is no longer cohering people hard enough so people stopped getting their boosters, covid cases are on the rise, it's just a matter of time before lockdowns are needed to ease pressure on the hospitals
I don't really have the qualifications to determine if it's working or not, but all I cared about was being able to travel again. Not being able to leave Australia so I could holiday in SE Asia was very difficult for me, so Im glad the government did what was necessary so people got the jabs and the lockdowns were lifted.