Perhaps they are devout followers of the Flying Spaghetti Monster.
Perhaps they are tweaking their nose at those who think all sharing must be piracy.
Perhaps they are embracing the hacking culture, I mean it runs on itty bitty routers that are hacked to run it.
Perhaps it is a nose tweak to those who think that free software has to have been stolen.
You could always change up the files yourself to remove the mentions of pirate, or run librarybox...
But then you'd be taking the advice of someone who deliberately assumed a name and avatar just to mess with peoples perceptions.