Australia is notoriously hard to poll.

Look at the 2023 referendum.

When something is fed to us by the media, and supported by both ALP and LNP there's rarely ever public dissent. The risks of age assurance weren't given any public airtime. The few criticisms that were put to the government were shrugged off as "oh it might start working later".

Probably a comparable issue would be the MyHealth Record nonsense, where the existence of the platform was largely uncontentious, but the change to make it opt-out rather than opt-in was actually put to public debate and once some day light got in, a significant amount of people opted out.