If anyone can get it to regurgitate articles without crediting the source, they'd have a slam dunk case.
But they can't. If they could, they'd have done it already.
News Corp is in the position of complaining that this... thing read its content, and now it has the audacity to talk about it. If it were a human doing the exact same thing, they'd be tickled pink. Seriously, "getting people to talk about your content" is worth major kudos in journalism. That's mostly why these comment pages are here at all.
But because it's an AI, they smell... Danger? Money? Both, I'm guessing.
Neither copyright nor any other legal principle gives a publisher the right to say that its content can't be read, and commented on, by anyone or anything that can legally access it in the first place. And News Corp of all people should not be allowed to create such a right.