You're hardly the first person to moan about that, and you won't be the last. Your moaning won't make the slightest bit of difference, though. The vast majority of the world already uses the word "piracy" to describe copyright theft.
Just because some clever PR campaign launched by the copyright lobby succeeded in equating harmless act of copying files to a violent dangerous crime, it doesn't mean we should perpetrate forever this substitution of concepts.
Because the main source of ire of book authors is that they lose some part of the revenue from book sales due to copyright infringement, which many call piracy.
Now, piracy is an incorrect and am emotionally charged term to describe this phenomenon. I believe that a productive discussion on any matter requires clarity of chosen terms. Piracy is not one such term when talking about something not related to sea and ships.