This sentence says that consuming the biosphere is natural as gas release. This colours a choice as an unavoidable step, and thus justify it. And this kind of logic was used by nations against other (as a side issue, disagree with other opinion is OK, downvote it - no. unless it's a Parimate evolution thing).
You don't even have to see it as a choice. I mean, even if we ignore the present and the future, thus avoiding any kind of moral issues, we can look at the past and see what Homo Sapiens has already done. It did provoke the extinction of a whole bunch of large mammals and insular birds, deforested extremely large areas and many other things. To a large degree, most of the impact of our species on nature is already done, so we should be able to look at it objectively, as if we were talking about an other species (to some extent we are, considering how different we are from say our Mammoth-hunting ancestors). And when we do, we should not let someone say that this was the only extinction to occur because of a biological species, because that is just not true.
You can't pretend to protect nature if you refuse to look at it for what it is.