I guess these sites aren't news organizations that would be covered by the proposed media law. Facebook is probably just trying to emphasise its point. Likewise, in restricting the availability of non-Australian news sites to users in Australia.
core news content means content that reports, investigates or explains:
a) issues or events that are relevant in engaging Australians in public debate and in informing democratic decision-making; or
b) current issues or events of public significance for Australians at a local, regional or national level
This just proves how misguidedly sweeping the legislation is.
52A: https://parlinfo.aph.gov.au/parlInfo/download/legislation/bi...