Humans don't deserve to survive the eco flush if it happens as we brought it on. Luckily the smaller life organisms will be able to adapt or come up with a new plan and life will continue, hopefully next time with an ''intelligent'' species at the end.
We humans are like roaches; it's almost impossible to kill ALL of us.
Case in point; about 70,000 years ago there was a Supervolcano in
Indonesia. Mitochondrial DNA analysis has shown that most proto humans died, and the rest interbred about that same time... ..but not ALL of us.
Soon it will be possible to grow enough food to feed at leat one person full time from a shipping container, if not a small family. That shipping container can then be sealed against the elements and transported literally anywhere; the Arctic, underground, underwater, even into space.
Indoor gardening technology holds the promise of feeding our future diaspora as we finish destroying the planet that whelped us.
If we can make chips and drivers as robust as the plants we grow with them, we will have created a new opportunity for ourselves to survive wherever we can find the necessary raw materials.