To me the distinction between terrifying and doomed is that the former is something you can/should react to and the later is something you've defined as too-late or given up on.
there's literally nothing that suggests otherwise, other than that it's physically possible to reduce consumption (i.e. it's not counter to the laws of physics). there is zero political or practical plausibility for reducing consumption to the extent that is necessary to avoid 4 degrees. you're holding out hope for something as unlikely as a miracle.
edit: there was a talk given years ago (i forget where/which channel) where the speaker said that to avoid warming we'd need to mobilize on the scale that we did for ww2 i.e. factories would need to be repurposed and laborers re-skilled. in that scenario it would be plausible. ww2[1] mobilized roughly 7 million people. if today we applied that kind of effort to the problem then maybe we'd have a chance. i don't know i'm not an economist but it's a unilateral effort on that scale that's necessary. and if you look around you can see it's not happening.
We are not (yet) doomed.