You are forgetting that people have been talking in code words for centuries: criminals, businesses with trade secrets, mystics and esoteric religions, revoluti

You are forgetting that people have been talking in code words for centuries: criminals, businesses with trade secrets, mystics and esoteric religions, revolutionaries and even friends secretly planning a birthday party. Talking cryptically comes so naturally that close siblings and friends evolve their own dictionary just for fun. Removing encryption will not change this.