I think when it comes to TV shows, just about anything goes. Reality TV is anything but reality, and I think a fishing show is just a mild form of that. Most will do what is best for ratings.
Cecil, it would be interesting for research sake, to know how many fish you receice with broken jaws versus ones that don't. I am talking about fish that are brought to you. What percenatge are damaged in this way. It might be soemthing worth keeping track of over the years so that there becomes a statistic for research.
It only stands to reason that a fish in the water never has it's jaw subjected to that pressure. What in nature would ever cause it to be. Even when it's being pulled in by line, it has the choice to fight back until it hurts and then relinquish if it gets to be to much stress.
Stargazer, please don't take this personally. It seems like you have a understanding about the fact there is a breaking point of going to far. I think most here like to take various opportunites to educate others. The "others" being people that we never get to know but are looking at this. There will be countless numbers of people looking at this post for years to come, lets make them the best stewards possible.