True. Knowledge of the Jedi was very limited as well. Take, for instance, in A New Hope when Obi-Wan wanders through the streets of Mos Eisley and even dismembers the arm of a thug with his lightsaber. Presumably, nobody noticed the traditional Jedi robes that he was wearing either. The people inside the Cantina may have merely considered Obi-Wan's lightsaber to be just another bizarre weapon of the galaxy.