True, nobody dies, but it is an attack on the person after a fasion. It is an insult that says "I have no respect for you!!!".
On Sunday I was flying a Niki from a capped airfield, after and extensive chase multiple bandits finally brought me down. I bailed, giving the kill to the guy who got me, I opened my chute at low altitude so that I wouldn't be too tempting a target. After I open my chute, I start typing a S! message to the victor. About halfway through this, I land. So there I am, on the ground, near my on airfield, typing a S! when what happens? Some dweeb straffes and kills me.
Now that goes completely against the grain of what I was doing and had done. I didn't try to ditch and rob the victorious pilot of his kill. I didn't have time to spy, as if there was anything to spy on that close to my own airfield. That was simplying an insult from an immature person who gets his rocks off by irritating other people. Of course I have no idea who the guilty party is, but a dweeb they certainly are.
Not shooting chutes is simply a mark of respect for ones vanquished opponent. I will never shoot a chute, even if he's done it to me.
Sisu
-Karnak