
Sounds like someones upset.
Weather forecasting is complex. Like trying to predict which way a candle flame will flicker, when all of a sudden somebody opens a door.

As far as I'm aware, the BoM don't "cover" themselves from mistakes, they are all good people doing the best they can with what they have.
I've met quite a few of the crew there, and have been impressed with their energy & passion about weather.
People have an expectation these days that weather forecasts should be "100% correct" and with temperatures, it's pretty spot on.
Wind can be very localised, just take Rottnest -vs- Leighton. Or even Leighton -vs- scarbourough. More advanced models are being developed all the time.
Can I suggest this article, which talks about the history of weather discovery?
www.seabreeze.com.au/Articles/Miscellaneous/A-history-of-weather-discovery_1216853.aspx"It's only in the last 50 years of human existance that weather forecasting has been of any sound accuracy at all." 
(It's wasn't that long since weather forecasts were based around such things as granddads bunion hurting, which would indicated an incoming storm!)
Enjoy...