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
Are there credible models that suggest Earth will turn into Venus or something? It would take a hell of a lot more to end humanity than it would take to "merely" hurt/kill the most vulnerable segments of our population (which is what I thought the stakes were).
Yes, the model is called Venus.
> (which is what I thought the stakes were).
You were misinformed. The stakes are significantly higher than that.