Yes, the comment you replied to seems to imply that the earth is an organism that seeks to maintain a particular balance. There may be homeostatic processes, but they're not part of a grand plan to preserve life on earth.
Agreed, homeostasis is something we observe in evolved organisms, not in planets whose inhabitant organisms became self aware and industrialized suddenly.
If the role is "get the carbon, that was for hundreds of millions of yeas trapped in the crust, back to the atmosphere in just a hundred or so of years and perish," yes, we’re success up to now.
A recent comment of a recent article about who's the most responsible:
"Wake up to find out that you are the eyes of the world."
edited to say:
It's interesting that on a long enough time-line, all life on earth is destined for extinction, e.g. the sun expands and vaporizes the earth. So, in the long run, our technological prowess is likely the only hope for our furry (and not so furry) friends.
