My sister once talked me into listening to Garrison Keeler. He was all the rage with her friends in Colorado. I only made it through one program and half of another. He was a living lesson in why it takes government subsidies to support a lack of talent.Keeler is absolutely 1000% pretentious and 1000% self-absorbed and his audience of mind-numbingly stupid leftists all lick it up like it's some kind of manna from heaven.
As far as the "drippy syrupy style of delivery" that you mention, I tried to find a youtube video of a scene from the movie Fahrenheit 451, one of the scenes in which the future NPR personality on the wallscreen is talking to the audience, calling them all "cousins", but it doesn't seem to be available. Too bad. It would illustrate your point perfectly.