Hardly. The current eco-nazi conventional wisdom is that increasing atmospheric CO2 heats up the globe AND man caused increasing atmospheric CO2. This new data, though not contradicting the view that incr CO2 heats up the globe, does suggest that mankind had no part in causing it.
It leaves open the "we should do something about it" argument, but may remove mankind's culpability in causing it.
The findings also are more consistent with the older view that changes in earth's orbit or solar cycles are the likely culprit.
What radical theories---that the sun causes the Earth to become warmer. Who'd a thunk it?