Nah ... earth has seen worse - massive hurricanes, global volcanic eruptions, giant shifts of plate tectonics, global warming, global cooling, snowball earth, endless rain, oxygen rich atmosphere, no atmosphere, asteroid impacts, environmental/ecological collapse, planet wide extinction events, gamma ray bursts, cosmic radiation, solar flares

We can just add the human species under capitalism as a small footnote to all of it.

If we don't try to save ourselves, we'll just end up as a small thin geologically odd layer in earth's history .... alien archaeologists in a few million years will see the K-Pg layer that wiped out the dinosaurs and then this thin weird radioactive layer of mismatched minerals and material that lasted for a few hundred years.