Yeah, at some point (which might have already happened) it'll cascade out in ways we couldn't really predict. I don't think anything humans could do would be as bad as the Permian-Triassic extinction event though, that was a uniquely one of a kind awful situation for life on earth. If things get bad enough that we destroy ourselves (or even just industrial civilisation) the biosphere will manage to recover, though obviously it would be better to, you know, not needlessly cause the extinction of millions of species of life on this planet.

[–] yogthos@lemmygrad.ml 4 points 1 week ago

I also think it's unlikely there's going to be a full on biosphere collapse, but our civilization could certainly crash as we start getting extreme temperatures. Food production is a big vulnerability, and there will probably be more conflicts happening as parts of the world become unlivable.