If you have not at least tried beach camping once, you will never know if that is the type camping you want to do again.
The first video was of campers that got trapped when the tide was coming in. If they did not make that run, the water would eventually reach them. It was poor planning on their part to be on that section of beach without knowing the tide tables. We ride the Oregon coast in off-road vehicles always make sure we are aware of the tides and where the exit points off the beach are located.
There are times when you hit a soft dry patch of sand where even 4wd does not help you. This why you use a buddy system to help each other out. If your buddy had 2wd in these conditions, he would be more of a hindrance than help.