In my own opinion one doesn’t need to have any morality to be able to persuade others as an orator. The only quality one must have is the ability to get people to hang on one’s every word. I’m not saying that to be a great orator you have to have no ethics, but if you look at such dictators such as Adolf Hitler or Joseph Stalin they were fantastic orators, and had no ethical values. The only quality is you need to appeal to the audience that your talking to. One must give a message or a plan to what the audience feels is the correct course. In my opinion there is no correlation between truth, good, or public communication. An example of this could be religious figures. They use such a positive as not judging people or basically be good people to each other. But they could flip that message to spread hate or to settle a vendetta. So no I don’t believe this to be true.