Nerfed Extreme Potions

An article from the Informer about the recent Herblore update and fate of the Extreme potions. Yes, they were quietly nerfed by Jagex, so they could not be used in any PvP combat situations, including minigames. I still like the potions and will use them on Slayer assignments. They also can and will be used to powertrain Herblore. By was the nerfing really nesessary? PvP worlds, ok, maybe... Though I don't think there are many pkers among players with 88+ herblore, it would only be a matter of time. But why forbid it in minigames?! That I totally don't understand.