What is the rate of escalation from a battery fire to multiple deaths? Especially when you move away from the flashy cases like plane highjacking to smaller scale incidents like school/nightclub shootings it's not at all clear to me that LiIon batteries cause comparable deaths to terrorism.

But also on the subject of risk vs reward, I think its pretty clear that cars cause more deaths than terrorism, if you want a clearer example of society deciding risks are worth the rewards