As long as people keep playing the sub-ohm game, thus keeping the majority of heat dissipation in the battery (I've seen 5 milli-Ohm coils, imagine where the heat's going when an 18650 has a typical resistance of 100 milli-ohms fresh) then yes, these things will be a menace. Just the other day a sub-ohmer at the mental health facility I was re-wiring had his battery explode on him. POPFIZZLE! It was just sitting on the concrete in the shade, he wasn't even using it and it hadn't been used for at least 10 minutes.
Ohm's law really needs to get more exposure in the classroom.
Ohm's law really needs to get more exposure in the classroom.