The trouble with most comedians who try to do satire is that they are essentially brash, noisy and indelicate people who have to use a sledge hammer to smash a butterfly. ↗
I don't think anyone's particularly conscious of thinking suits are the thing, but when you see a comedian on stage in jeans and a t-shirt it doesn't matter how good they are - it always looks like amateur hour when they walk onto the stage. ↗