Or.....against thieves. As someone who had stuff stolen, I'd pay money for electronics that catches fire once reported stolen, thieves are literally scum of the earth and only one step above murderers and rapists in my books. Great step by Samsung here.
I can't argue with your assessment of thieves, but if you're going to have self-destruct mechanisms in your devices, appliances, or car, do you really trust a company like Samsung with the red button? Wouldn't you rather have that under your own control?