Porch,
Given your prior experience I would bet my left one that if you looked at any of those TAF's, especially the one handed to the skipper in Sydney prior to departure you would have picked them as all susceptible to fog, DESPITE them not having a PROB. I would then bet my right one that if you looked at the metar's or speci's you would have picked it again?
I'm looking forward to finding out from the report why MET didn't pick any of the above? I'm also looking forward to finding out why the crews didn't get the information they required, from multiple sources, when it was timely available.