I think it's interesting that there was downward pressure to stop that practice. There was no evidence of that fact from our end, though Rowan got killed not too long after Caerwyn went to war, so if Baal ended up disavowing the practice I never knew it.
Everyone Brance talked to blamed it on everyone else. Given the number of KRB incidents that occurred every time Caerwyn moved into an Astrum region, there certainly was no feel during the the actual war itself that anyone was making any attempts to stop and/or reduce it. And given the fact that, generally, no one knows what kind of looting anyone else does, anyone who didn't want to do it could easily have
not done it and no one would ever know they didn't, I can give little credence to any claims of "We didn't want to do it".