Individuals pilots are obliged to extract the latest information from the primary materials i.e. AIP. Most pilots are not flying into every GAAP - whoops, whatever they are called these days - or around or across every capital city airport in Class C every day. So it shouldn’t be that hard for an individual pilot to ascertain the current information for a flight from A to B (and, indeed the individual pilot should be able to do so). (I assume the CASA guidance material will be out of date or inaccurate anyway, so just use primary materials as a matter of course.)
However, you take the same pilot and give them the responsibility for keeping all OnTrack materials up to date in real time and s/he will die trying.