It's probably because "+1" and "yup" comments are discouraged, so the people that immediately feel like they have something to add are the ones that think the article is not telling the whole story. At least, that's my guess. I would expect that a representative poll (https://news.ycombinator.com/newpoll might be a starting point) would show an overwhelming majority of readers/commenters does think global warming is real and caused by human emissions.
With measured change in C02 the past 60 years[0], how can we expect the system to behave the same? In my lifetime I will breathe air with C02 levels of 480ppm. Throw in the high sea temperatures [1][2] if you would like some bonus content.
Idk what it means for us on the ground. 90% of the doomerisms haven't gone anywhere - but this is worth keeping an eye on. Who knows, maybe in 3 more generations we'll hit 800ppm C02 and experience cognitive decline[3] before we have to worry about the climate system getting funky :)
