Earlier quoted context omitted.
The sad thing is that scientists have understood the risks of global warming for decades, and yet our civilization (maybe I'm just speaking for the US here) seems impotent to effectively coordinate a response to this slow-motion threat. It could be our own Great Filter. https://en.wikipedia.org/wiki/Great_Filter
and yet our governments
Assuming they really swept global warming under the rug, they did it because accounting for it was unpopular. We prefer to vote for a candidate that won't reduce our comfort rather than one who decides to tackle a problem most people don't really understand.
We are the ones to blame, governments just gave us what we wanted.