Well there is something seriously wrong with that list, or at least a LOT missing.

For a start, The weather station on the tip of Wisons Promontory is missing and would have a far higher average wind speed that Sandy Point or Port Weshpool, neither if which have an official BoM weather station with anemometer, and as far as I know, there are no official observations taken at either, so where the hell did those figures come from?
Also missing from that list is Gabo Island which has an official BoM station and is probably right up there with Wilsons Prom for windyness!
i can also think of a few places in Tasmania that would be right at the top of the list as well all year round, and someplaces in Western Australia which are VERY windy at 3pm for more than half of the year at least.
And on and on........
Its a load of Crock!