The sites that are being policed are chosen by the office of the australian information commission & esafety.
It is already growing
prex
This legislation only bans people under 16 years of age. To change that requires a whole new bill & vote in both houses of Parliament.
I can't be much clearer than that
Not going to waste my time. How about Russia dipping into its gold reserves?
There is nothing out there - all there is is sea, and birds, and fish.
And 20,000 tonne of burning crude oil.

Edit: but for oil
Just tow it outside the environment.
The age & general cohort of who this applies to is in the legislation (under 16s).
Think more about which sites/platforms it applies to. There was some indecision about YouTube (its in EDIT: utility kids is out) & but signal/whatsapp/telegram are not affected - yet.
Twisted shank nails are a thing. This image somehow looks wrong though, same as the knife.

Yes - that's how laws work.