I know what you mean. I literally become ill when I see him on the tube or the internet with that horrendous gushing, lisping, Tom Brokaw l’s, rasping, obnoxious, arrogant manner of speaking. I don’t make fun of speech impediments, but in his case, an exception is warranted. Gosh, I hope he loses and just goes away.
It is not a speech impediment if is face is damaged as a result of voluntary participation in unspeakable acts.