I think that train has sailed, so to speak.

Well, depends on how you define “total self-own” I guess. We probably aren’t going to go extinct – unless we eg. run into a Black Swan event and suddenly find ourselves doing a speedrun to a more Venusian climate – but even if we went carbon negative right at this second, we’ve pumped enough energy into the climate system that shit’s likely going to go sideways pretty spectacularly anyhow. Not a total total self-own, but a lot of people are going to die either directly or indirectly