TV is entertainment, period. No matter how good the technique that may be demonstrated, or how appropriate, they do not show enough detail, and rarely the complete process, for a novice to be able to use it effectively. If they prompted further research and knowledge seeking, including practice of the skills before an emergency situation, which some may do, then few people heed this advice.

I like Cody's books, they are practical and give good information. I am sure that all of the actors in these shows do have some good experience. All of the shows are under the direction and control of the producers and directors, and they are there for ratings, not instruction.