The Quad juggernaut has just begun. Give it time.
I think there is some confusion as to the benefits of what the Quad really means. Real time intelligence sharing and military coordination between these 4 countries is incredibly invaluable, because they represent different pressure points along Chinese land and sea borders. So one example would be putting aircraft carriers in the South China Sea, and Japan and Australia putting aircraft and ships along different parts of Chinese border in order to limit the number of aircraft and ships that China can use against any one adversary, such as India. Then there is also intelligence sharing about Chinese radars, sonars, submarines, ECM exploits to disable Chinese weapons. All this can add up to be incredibly valuable intel in any war with China.