Am a carebear, forum dad, erm, whatever the nomenclature is these days. However I don't think you should read too much into random killing. I have come to accept that Open is like the Serengeti. You better not show up at the watering holes with a broken leg.
I often think of the rando killers as hunters. It is just human nature. Some like to shoot sparrows with cannons other like to use a bow. Although they sometimes come up with the most silly reasons they do it for their own pleasure. The grief is obviously very high for the deer they are killing and I would say that only a small subset of them get off on the actual grief (very few of them have small male genitalia with god complexes). And some enjoy the chase, thrilll ect etc. Unfortunately Elite is designed to exaggerate the grief. Since the counter measures are either fully combat equip a ship so you can hold 1 cargo, fly with a broken leg (minmax cargo), git gud (too old for that ) and so on. All of which causes loss of money and time.
The time is important here. Sine you can easily lose 10-15 minutes + cost in one killing there is not much incentive to hop on to the Serengeti. Also the time + cost loss seem to be skewed towards the trader/explorer. But not sure about that.
Post of the year right there folks.
I might add that to my sig. "Don't go down to the watering hole with a broken leg."