Well, the text was supposed to be censored - it was written that way, with all the *beeps*, on purpose. Which poses a problem. For the DLC, they would have to manually replace all the *beeps* with words that would match the improvised voiceacting - and that sounds like it would take A LOT of time. And you'd also have to consider the translations. In the other languages, the swear words are also *beeped* and would need to be replaced, and that could potentially cost a lot of money.