You're nothing of the sort, killing merely for entertainment alone. I think that's more like a psychopath (or is it sociopath, I don't know). Those that fill that role in other animal social communities are typically either short lived or otherwise isolated.
You are right and the issue at hand is the game is not really entirely multiplayer, so explorers and traders will not have in-system protection due to the various instancing issues that the game exhibits. The situation becomes then wing of pyschos vs a lone explorer, compared to what a correct situation would be in a system like Omega station with the whole fleet in there (including its combat wings) where the said psychos would be 3 vs 100 and wouldnt last a minute in there. So what happens here, is we have some slightly mentally deranged people harassing others by exploiting game mechanics so they can do their "predation" without any consequence.