Ironically, public speakers worry about humor in their talks.
However, the reality is that any presentation coach would advise them to stick with a bit of wit and avoid humor per se. Humor is idiosyncratic. Its impact is subjective. What causes one person to laugh might make another feel offended. There were those who labeled Joan Rivers, whose comedy was raw, a menace, not a source of entertainment.
The same reason for caution applies to all forms of communication. That's exactly the reason why Martin Amis had a difficult time finding a publisher for his novel "The Zone of Interest." It treats life in a Nazi concentration camp with dark humor.
In The New York Times, Rachel Donadio reports, "In France, they say they're puzzled by the humor. In Germany, they say it will be difficult to market." Here you can read that deconstruction.
Great comics like Charlie Chaplin and Mary Tyler Moore have almost a supernatural sense about understanding what will have near universal appeal. That's a form of genius.