I have to agree that what they did was stupid, but if you are from South Africa you will understand it a little better.
You have to equate that family with some redneck family from a farm somewhere in the US. Tourism is booming in SA as is 4x4 trips, training and escaping in general. Most of it driven by the violence and crime in major cities. People are looking for place to go have a vacation where they can escape from this.
Now enter the picture, a farmer, his sons and daughter. They have been driving 4x4's on their farm for years, no-one went to 4x4 school. Things were learned from experience. No overland certification, just some common and some not so common sense.
They decide that they are going to start eco 4x4 tourism. they have a farm, they have 4x4's and this is their marketing and self promotion. The pass they did is very famous and they decide, hey we will show people how it is done. We will have a video and we will use it to promote. What is more, we get to do it on some TV networks dime. Well, it failed.
Take the same redneck US family from somewhere and ask them to make a video. I am sure you will see the same thing. Dangerous practices on the ranches is Texas, hey my grandfather did this, and never got killed etc etc. I would bet you would get the same scenario.
However, why do you have to be from SA to understand it? Well, because the other dangers that you are faced with on a daily basis in that country, far outweigh anything in that video. Was there a ton wrong, yes, did they trash the environment, yes, were they stupid, yes, however in their daily lives they deal with much worse issues and I can assure you that there are people in SA that destroy the environment much worse than this on a daily basis.
All you have to do is take a drive through some of the under developed areas. These people are only trying to eek out an existence in a country where it is becoming much more difficult for farmers to be safe and survive.
So don't always judge so harshly what is seen on the internet. Rather learn from it, just like these people probably did when the video aired.