Come on. Seriously? This is how you're arguing your position?
Well, there's a REASON why there's no outrage about that.
It's a parody. No one will mistake Pride and Prejudice for Pride and Prejudice and Zombies.
Are you sure about that? If I take 85% of the text of Twilight and insert ninjas and publish it as Twilight with Ninjas and credit Stephenie Meyer as "co-author", you think I wouldn't get my ass sued? Maybe the courts would rule in my favor, but that would only be after I bankrupt myself fighting Meyer's attorneys.