No, in fact there is, but it is much less prevalent and taken much more seriously. For example, in a historical event recently (pretty much same people as in CT) one 880 FAA pilot was shot at in his parachute by a JG2 pilot.
The reason that we "care" about chute shooting, is that it actually has an effect on us. The Sierra Hotel board on the squadron's website shows our performance in historical events, minus our deaths.
While I think most of us recognize that shooting at parachutes is a historically realistic thing to do, we also understand that it is something serious. If one squadron starts doing it, we all stand to suffer (if not in our lives, at least in our stats). All I can say is: Check 6, JG2.