What do you think was the purpose of the comment?
Do you think that comparing someone's CO2 emissions with the average and pointing out that it is much higher is value-free, just a totally neutral observation for no reason? That the commenter is fine with it? Or even that it's a good thing?
No, it does not mean the commenter is fine with it. Regardless of their feelings, the commenter had the good sense not to include any shaming.