I am not suggesting that he wasn't effective as a communicator. In fact, I would still listen to his presentations and won't be bothered by any profanity. My point is that advocating profanity in tech presentations is not necessary. It seems like a lot of young people are eager to drop profanity words when they present to wide audiences just to show how cool and different they are. But when everyone does it in presentations, it becomes cliche or even a pain.