The title Armageddon Preppers should be hint enough that it´s not about regular disaster preparation. I would tend to believe that the crew took it as good show to get a bigger audience.
Let´s face it, real life preparation is mostly unspectacular and boring. It may not even make it into the news in case of adverse circumstances. In the case of a natural disaster, the news show people fighting over the last cans of beans in the store. They don´t show the people who bought their supplies months ago.