TV station in Lincoln, Ne used to have a weatherman with a speech impediment. Story was part of his tongue was missing.
I was a member of a local school board for two years. The chairman of the board had a noticeable stutter. It didn’t interfere with his being chairman and even interviewing on radio.
The absolute worst stutterer I ever knew spent his entire working life as a professor. I don’t know how he did it. I guess his students had to get used to him.
But anyone can feel nervous over giving a talk. Although I spent my entire life as a professor, I got at least a bit nervous before giving a talk to a large audience.
I believe his name is Peter Overby, reporter on NPR. That’s pretty public talking since you’re known only for your voice.
Art Buchwald is dead now, but he had a speech impediment. I heard him speak at Harvard a long time ago - you could hear that the impediment but he was such a personality that it made no difference at all. In fact, it just added to the unique character of his presentation.
James Earl Jones had a stutter so bad that he was functionally mute for eight years. Guess he managed to overcome that.
My talk was a success! And I was able to say “superfluous” without skipping a beat! Thanks for all the support, everyone!
Congratulations!
Nice. 
Great to hear! I have a lisp which I believe is pretty well hidden - but there’s no way I would use a word like superfluous if I had to give a speech, it would tip me over the edge and I’d be Sylvester the Cat-ting through to the end.