This is relative based on the severity of progressively increasing climate problems. We have 10–12 years in which we can still reverse what is happening. We are seeing climate change storms, flooding, fires now. If we very seriously begin to reduce the carbon in the atmosphere now we could, perhaps hold to this level. Think about the increase we have seen in North America over the last five years. Project that for ten, twenty, thirty years.
In 80 years we will have lost significant parts of all sea coast cities with sea level rise between 10–50 feet. We are already in an extinction event that will eliminate many cold climate animals. What will be that impact on us?
One real point is that in ten years or less we will have locked in planetary heating that cannot be reversed for a century or more. The heat builds in the oceans. It is very difficult to cool the oceans back down..