Greenpeace is known to be overreacting to things a bit, and they defend behind a good logic to do that. What do they say they want? A better earth that's not killing us, which is amazing right? I mean think about it this way, would you want a world where it is doing a lot better? Everywhere green, the whole world filled with oxygen that you breath to feel better, beaches and forests all amazing? It would all happen and that would be amazing.
But that doesn't mean that you should be overreacting to every little thing and think that you are doing the right thing. I should save money and be rich too, but spending a dollar won't get me there, saving 50% of my salary would. Focus on the top 100 companies that ruin the world, they are the cause of 70% of the pollution, that would be a great start.