... if someone wanted to republish an article entirely now they can do it much more easily, instead of figuring out who to contact to negotiate a license.
Does it really do that, though? According to TFS, the popups come up for third-party quotes as well as for the original content. If this paper actually has the rights to that third party material, I'll eat my hat. If you think that's okay, I've got some Mickey Mouse licenses I would just love to sell you.