Hi there Ken,
Re privacy ... these WWII records are only digitised after someone requests them, and you need to certify that the person is deceased. At least that's what happened when I sought to obtain my own late father's WWII records. Thus I presume that whoever has digitised William Henry SMITH's records has certified that he is deceased (and I note he was born 1900). There is a fee to have these records digitised.
There's many WWII personnel whose records are not digitised, but the files are held at the National Archives of Australia.
Cheers, JM