By using your reasoning folks should simply put "Deer Hunter" on their trucks, yeah, they're still hunters....but they've narrowed it down a little.
Nothing wrong with that, either. Isn't that what we're doing when we put a white outline of a deer or a deer with a rack on our vehicles (professing our love of deer hunting)? As long as one hunter isn't prejudicial towards another.....I see no issue with it. I'm betting you BobCo, Schultzy, et. al. have NO problems referring to themselves as traditional bowhunters. My bet is they're proud of the monniker.....because it defines their approach to hunting.