Growth of the danger of household devices

For many years my attention has been attracted to the question of the constant increase in the energy intensity of household appliances. Well, remember, the battery at Terminator-3 exploded with an atomic explosion. And then all this news about the fire and exploded phones, laptops, and recently - electronic cigarettes. Recently, on the roadside near the house, I found a campfire. Wondered why suddenly someone needed a fire near the road? This we only see in the movies about the American homeless people :) Yes, and the place of the fire looks somehow not very natural. When I passed by the third time, I came closer. I see - a lot of burnt out 18650 batteries. It's unlikely that the Musk's Tesla burned, so, given the number of batteries and the absence of other large components, it is likely that some owner of self-balancing scooter (or something like that) was unlucky.