You may mean 'hearsay' not 'heresy.'
Even when there are multiple QF long haul cancellations - recently there was an A388 hit by a catering truck in LAX, and on top of that unexpected event, there were two A388s unavailable due to maintenance in Dresden and Abu Dhabi, so multiple long haul flights cancelled as QF requires 10 A388s for its timetables but had only nine, the lazy Australian media didn't even realise or report it. The number of passengers affected would have been in the low thousands.
If you took the time to read the JQ cancellations thread, you'd observe that there's a semi-regular pattern of B788 cancellations, that as MEL_Traveller states appear to be rotated between various flight numbers.
Largely, Australia's mainstream media is too scared of losing advertising revenue (or freebies for their travel section writers) to criticise powerful companies like Qantas Group. A few thousand passengers being delayed by a minimum of a few hours (and in some cases more) is newsworthy.