I think it is worth remembering that we ARE nature too. People often speak as if there is nature and then there is us. We are simply a part of that natural system.
It is an interesting philosophical debate as to where we all fit in together; all species; all animals, including us. In the non-human sphere, survival of the fittest is the rule. And we assume that this does not apply to us - but it does. We too are part of that universal system: this is what humans have been doing since they evolved - fighting for their own survival. It is part of how nature works. It is what we are programmed to do.
But now we are faced with the paradox that following nature - following what we were born to do - has resulted in the danger that we will extinguish ourselves, and the rest of nature along with us.
What I conclude from this is that it would be good to ditch the guilt - we are guilty only of doing what we were programmed to do, which is to place our survival above all other, as all of nature does, and always has.
What we need to do now is to stand back and persuade ourselves to deprogramme and move in what is an "unnatural" direction.
These appeals for change should not be worded with the premise that we are all guilty of some crime, but rather that we are evolved creatures who can stand outside our nature and make changes because our intellect chooses for us to do so. Being told that we have the sense to stand outside our nature and do what is needed is far more appealing than the relentless guilt trip that is dinned into us; and into our children.
Ascribing guilt to others makes it very easy to duck out of the need to change.
I was not having a go at Attenborough, but it is a fact that his life has consisted of flying around the world in a way that most people do not. He is therefore maybe not the best mouthpiece for this important cause.