i only occasionally get caught by it when i forget that Kill command counts as all pet damage in this case even though its a player action. i try not to do old content as BM for that reason.
i understand why its there although I'm not sure how much it would really hurt to see it go at this point with aggressive stance gone.
the restriction is 1000% worse on my enhancement shaman clearing trash. its almost impossible to get a fire nova off on trash since they die to the flame shock, and using magma totem will trigger this too