Seriously why are these people telling you this stuff... all you seem to do is post it online.
You've taken people on other forums for a ride before:
https://www.australianfrequentflyer....e-quiet.95881/
https://www.australianfrequentflyer....f-seats.95715/
https://www.australianfrequentflyer....filling.95696/
major cutbacks coming to SYD [?]
don't fly Qantas protest gains momentum
For all we know having "200 unsold seats 4 months out" could be normal for that time of year.