Indeed, I agree that piracy is wrong. Though obviously I hold that this kind of DLC scheme is wrong as well, so I don't buy such things. In my books it falls into the category of abusing the customers. 8 months from now, they will no doubt come out with the, "complete edition," like so many others do as a game's longevity has ended, where all the DLC and the base game will cost less than all the DLC would cost, which is them attempting to get the last bit of money for the title - but it damages their relation with customers because the actually loyal players who supported the game from the get-go will have spent more money on the game then the only casually interested players who wait most of a year to pick up a title.
Though a point of contention for ya 2Coats, the developers not releasing the Koatl content with the base game does sorta fall under a grey area. The content was seen within their promotional material, so some customers may disagree with your opinion of, "knew what you were getting," since they could have been lead to believe that giant turtles were just a part of the game by these images.
And I did not voice an opinion that is illegal, that's why I said it. I do not support piracy because it does nothing to help the situation, I did point out that people with the game freed of Ino-co's lock on the content have been using it for a while. There is a difference between pointing to facts and proselytizing for the bad guys.