That's exactly what it does say Car RAMROD:
"By entering this site, you acknowledge that this information is produced solely for use by the aviation industry, and you are aware that any information for the purposes of flight planning should be obtained from Airservices Australia."
Anything for flight planning should be obtained from ASA. I couldn't tell you exactly why they put it up, perhaps it is as some kind of back up, perhaps they have the product so they figure they should put it somewhere but won't go the extra mile to ensure it's kept up to date all the time as that's what ASA do? Maybe they have it up for people who don't have access to NAIPs for whatever reason, as in don't have a login but still want to check Aviation Style Weather?
Who knows, but it does say quite plainly that anything for the purposes of flight planning should be obtained from ASA.