Apparently, in that place Pirate just means someone who sails the oceans but isn't affiliated with the Marines or a merchant group. From what Smoker tells me, a lot of the pirates don't go around pillaging or robbing, but seem to just be out seeking adventure or freedom or something. I've talked to one or two of them myself, and they don't really remind me much of Long John Silver, more like something out of a goofy comic book.

I expect you'll run into a few.