Following that mindset there is no such thing as griefing in games at all.
After all by teamkilling you establish your position as the person with the highest score, by preventing others from doing so, which may be your personal goal. Or shooting naked people at the beach in dayz.
@Atreties do I really have to literally write everything with the smallest details in the hypothetical situation for you? Isn't the general idea clear?
You can't know if he's noob. That's true. I just assumed that there is some way to identify him as "someone you don't know as enemy or open ally of your enemies". Aka random guy. Just to exclude personal revenge or war as a reason.
By "somewhere" I mean "not towards you/your ship/your base/valuable resources you know about". Just passing by in some random location. It also means he's not shooting at you, just flying.
I.e. right out of initial safezone, like 1000 noobs before him. Or in open space, outside asteroid belt.
Fear and respect are two different emotions. Both can lead to the same results (them obeying your request/command). Getting satisfaction from having others fear you is just as sociopathic as from their grief.
Shooting someone on sight will never lead to him surrendering in the future. Quite the opposite.
Fun of competition comparable to kicking newborn puppy or racing against bicycle in motorbike on a straight road. That's quite low requirements to feel superior and victorious.
Joy of seeing stuff explode is finally a valid reason. Although offline sandbox would be just as good for that.
The last part indicates that your goal is to make all the other players being forced back into safezones or quit the game forever. As you want to destroy all their potential to improve and provide real challenge.
That's quite sad.
And what you gonna do when you succeed? Quit the dead game to find some other to destroy?