I wouldn't say that he's using IC2 as a weapon, I'd say it's more of a defense mechanism. If there is a pack that violates IC2's inclusion policy, then I say that if the IC2 devs know about it, by all means, insert a thing that tells users of that modpack that the modpack they are using doesn't have permission. The pen is mightier than the sword, or in this case, an achievement pop-up is mightier than exploding bees.