Oh, sure, Zombie Hunting is the mainline modern profession. But that wasn't the case in centuries past. Vampires and werewolves were the main business for Hunters and zombies and other revenants were the sideline. You'll note that both the werewolf kits I've shown are heavy on forensic equipment and academic study materials and light on weapons. That's because hunting an apex predator such as a werewolf took serious preparation. The weapons themselves were usually just modified standard firearms loaded with silver or other specialized ammunition.
What's been preserved are the unique tools of the trade.