Actually, level of warming that could directly wipe humanity is technically possible, even the hopium dealers among climate scientists admit that (notably Michael E. Mann). But even if it doesn’t kill all of us directly, it will likely generate a domino effect for other existential threats.

Yes, until the political situation make it unfeasible without being treated like a dangerous terrorist. The OP didn’t said it either, but she should have.

The post is right, but only on the paper, and not really in a world that is progressively taken over by ecocidal autocrats whose program is to kill every bit of efforts in climate fight, so even the smallest progress we made will soon be distant memories and fighting will be increasingly dangerous and difficult and, ultimately, virtually impossible. And the locked-in catastrophes are now sufficient to collapse our already fragilized geopolitical context.

People saying it’s “not too late” are systematically downplaying the current political context, wich make their message pretty unconsistent.