How many people have shot up electrical substations, a fairly trivial way to causing widespread harm that was popularized in the news just a few years ago.

But it's only happened a couple times. Because most people just can't be assed to harm a hundred thousand others.

Most people don’t want to hurt lots of other people in an untargeted way, yes.

But there are a lot of people, and, apparently a few of them shot up some electrical substations?

If you hold constant the (very small) fraction of people who want to cause mass harm, and increase the average ease with which a randomly selected person could cause mass harm , you would expect the amount of deliberate mass harm to increase, even if the fraction of people who would want to do that is like, 0.000001 of people?