Someone brought that up the last time this came up on HN. In the explanatory materials, they clarified that (ii) is indeed meant to restrict this to posts on their own Facebook page:
> 1.89 In the case of a social media service such as Facebook, this rule deals with the situation where the news business has posted its covered news content on the news business’ own social media page. Comments on the news business’ articles posted by somebody else on another Facebook page are not covered by this law.
> 1.89 In the case of a social media service such as Facebook, this rule deals with the situation where the news business has posted its covered news content on the news business’ own social media page. Comments on the news business’ articles posted by somebody else on another Facebook page are not covered by this law.
https://www.accc.gov.au/system/files/Exposure%20Draft%20EM%2...