I thought he was just doing the whole, standard "humans are all bastards and will ruin the world" thing.
Yeah kind of. I really don't think moving away from the natural world makes humans any happier, so if "ruining the world" doesn't make man-kind happier then it's just a waste.
Like I said, I don't think there's some standard for what the world's supposed to be like. We change the world because happiness isn't all there is. Progress is the goal of a lot of people and progress is unstoppable. Moreover, I don't think we're ruining the world. Things are improving everywhere, progress marches ever onwards and the world changes, occasionally for the worse, mostly for the better, in all fields, be it the standard of living or just how we go about protecting the environment. Have a little faith that we're not going to kill ourselves and everyone and everything around us, because
we don't need to do that. And the majority will always outnumber the minority that want to.
Also, if you're talking about what makes humanity as whole happy and that anything that doesn't make us happy should be discarded, then it sounds like you've got a pretty Utilitarian view, which probably isn't the best way of looking at things. What makes a person happy will differ from person to person, so you can't really say "only things that make humanity as a whole happy are not a waste" because then so much more will be... wasted.
Anyway. Progress and invention make people's lives easier, more comfortable, more productive and, for the vast majority of people in 1st world countries, happier. I don't really see how you can say that moving away from the natural world doesn't make people happy, when all around us are people enjoying themselves because of the things scientific progress has provided. I mean, hell, in third world countries, some people are just as happy as us, sure, but many, many more have trouble surviving, have to work hard every day just to eat, aren't afforded medical attention that we can provide because they don't have what we have and suffer atrocities caused by neglect, other people or just a lack of protection from disease, storms, natural disasters and so on. So yeah, we're happier than people who aren't ruining the world as much as we are, because of what we've achieved. Part of what we've achieved is finding ways of fixing our mistakes. That's how progress works. The BP oil spill, for example, is a total disaster, never should have happened, the people involve should be arrested, and so on and so forth, but I can say with absolute certainty that ten years from now we'll know how to cap a spill like that quicker and safer than we can today. And I can also tell you that, and I can't make any real time estimates here, some day the mess that the spill has created will have been cleaned up, leaving us with an idea of how to do it faster and more efficiently than we can now (although hopefully it won't have to happen again).
The world isn't being run into the ground. Something happens, something bad is one of the results and a ways and means to fix the problem results from the bad things.