The law is not bizarre in essence (there are details that are bizarre though): You are free to ask money for your content. On the other hand, Facebook is free to not buy your it.
No, with this law Facebook is not free to not buy the content. They are specifically forbidden from excluding those media companies from results, and lets not forget the cherry on top of the shit sandwich which is being forced to share their algorithm with the media companies, and even having to give advance notice of changes to their algorithm, something which is probably not even possible.
On top of all this, the definition of "core news" in the bill is ridiculously broad.
It's completely untenable, and IMO Facebook would surely (and predictably) have to leave the Australian market under those conditions.