Yes, it does. The argument was thus: the Emporer Penguins are changing locations, and they were not known to do that before. Therefore a possible cause is "climate change".
However, this research says that they did, in fact, do it before. Therefore the explanation of man-driven climate change as a probable cause IS weakened, because it has occurred in the past due to other causes. Q.E.D.
This particular change is projected to be more severe than prior changes which these penguins have been through, which is why it's interesting.
Projected by whom? Please be specific. History says otherwise. It has been both warmer and colder before, in the Antarctic. In recorded history, even. In fact, even in just the last century. Look up 1937.