It was a major promise of the government and is still proudly displayed on their website.
From online polling done when the laws were brought in:
"YouGov survey found that 77% of Australians back the under-16 social media ban.
Furthermore, 75% of Australians also indicated support for government's plan to introduce a “digital duty of care”, that would hold social media companies accountable for proactively protecting users from harmful online content.”