Maybe you are prone to valueing the quantifiable and direct impact a hacker can make higher than the indirect and non-quantifiable impact of someone else. Just imagine the influence someone could have through a conversation with an influential politician at a dinner party. The aforementioned hacker might not have the rethorical abilities, broad academic background and social network to do this. Still, it could have finally had a much bigger impact on the environment. Of course such a conversation does not occur frequently, but I guess reducing Facebook's electricity usage by 1% doesn't either.