I'm not going to argue about this because I don't have time or care enough to research so I will assume the graph is legit. The ecosystems had far far longer to adapt to these temperature changes.
If I had to guess, your graph goes back before homo-sapiens. I am unsure about the relevance or how it suggests anything about how the current ecosystems will adapt. Or when the temperature will stop increasing.
When we run out of oil? Look at all the stuff around you based on petro-chemicals. There is no winning here. Pretty much downhill. Only question is how quality of life will be impacted over a timeframe a TINY TINY fraction of what you posted in your largely irrelevant graph.