Actually, it's more a case of not wanting to have the camera on guy who's picking his nose while somebody else is making the point. And the host screaming for everybody to shut up, since "We just missed a break!"
It's a fantasy world they've created where everything's choreographed, things rarely go wrong(on camera at least), and the players mostly look like All Americans. Maybe they feel they could run the country the same way. Or more likely, would like us to believe they could. Maybe they have attempted to sell the unwashed on the notion of their infallability? I recall similar thoughts of a cbs "Camelot" expressed by Dan Rather(remember him?). IOW, I suspect most of these media types, at least the high rollers, live only in their media world. The rest of us are unenlightened heathens who need their guidance.
Even "suits" have to pick their noses now and then ;^)