Sorry for the misplaced optimism , if it makes you feel more bleak, building all those DAC facilities, transporting them and running them will require millions more of DAC facilities.
I just mean that it seems like actually a somewhat possible number for humans to build, though obviously it's more like infeasible than impossible. I pretty well realized how fucked humanity is around a decade ago, so it has been interesting to watch the realization spreading.
Sorry for the misplaced optimism , if it makes you feel more bleak, building all those DAC facilities, transporting them and running them will require millions more of DAC facilities.