Filming hunting shows has got to be one of the more difficult things to get on film. These folks surly must get a lot of pressure to get the kill shots on film as well. I'd say I'd be ok watching them pass on shots and be ok with watching them hunt for weeks and not kill anything on that adventure. In the real world with sponsors and all, I'd imagine they get/feel a ton of pressure to get something dead on the ground and on film to make the shows.
I have to admit I have sadly missed shots or had poor shots needing another shot to bring an animal down. Most of these have been without a camera person filming. My hat is off to the hunter who can say all their kill shots and hunts have been one shot kills and "all on film". I'm not sure I'd want all the filming pressure these folks have on the hunting shows and putting themselves out there in the public eye.