Unsurprisingly, this doesn't end well.
You might think that this is just some mindless video of people destroying cars for the hell of it, and while it certainly isn’t NOT that, it also raises a good point. Just how much abuse do you have to put a car though before the airbags actually deploy? The answer is: more than these people were able to inflict. Now before you go getting angry about the waste of perfectly good vehicles, the video states that they were provided by a scrapyard.
So we can assume that these vans had already been written off for some reason or another. It’s still wasteful, but not nearly as much as if these were actual serviceable vehicles.