Although I do not condone chute shooting, nor do I recommend it,
it was an action that happened in real life; especially in the Pacific Theatre of Operations in WWII. And, it is not an action that one can honestly accuse another side of doing with remorse. Both Axis and Allied, ETO anfd PTO, shot chutes with the purpose of killing the pilots in those chutes so that they might not have to face those same pilots again in combat.
On the other hand, in this WWII Air Combat Simulation where one can re-plane, re-GV, re-bomber, re-boat an extraordinary amount of times, who really needs to shoot chutes except those who have very low self esteem, or are very immature?