Every single Australian 's ID will have to be verified (in order to confirm their age). Depending on the degree of cooperation (/coercion) the Australian government has with social media companies, the Aus Govt will be able to access citizen social media data with relative ease. So no more pseudo anonymous accounts (or, at least, they'll be made more difficult, especially for non-technical folk). Reminds of the 'chil…
The level of conspiracy theory about the “mainstream media” feels out of control at times. Legacy media’s control over the population is already gone (as you stated), with what leverage would they be forcing this?
Occam’s Razor: voters are genuinely concerned about the effect social media is having on kids. As a parent I hear about these concerns a lot. That is what is driving this, no matter how badly thought out the implementation is.