Your own link shows a change in pattern from ups and downs from year to year with larger patterns of rising and falling to an extremely recent upward trend in which every year is hotter than the last. We're looking at a level of heating on the scale of decades to centuries that would normally be seen over millions of years. And humans didn't show up during those hot periods, we showed up during the cooler period. Sure, there may very well still be life on the planet after we're done, assuming we don't acidify the oceans and we figure out how to dial down the rampant pollution after pushing ourselves into a kind of climate not seen for 35 million years, but will humans be able to live in that environment? Quite possibly not.

Looking at the wider picture doesn't show that there's no issue, it shows that there's a critical issue and we're screwing with extremely long-term trends that constitute the conditions we evolved under.