One is an analysis of how the plant and animal kingdoms appear to behave while the other is a twisted suggestion about how a certain group of humans should behave.
I don’t see why anyone thinks that would sense to compare them.
Some animals will eat their young. That is a scientific fact. If some group comes along and says humans should eat their young and we tried to blame the scientists for observing that behavior in animals that would be a really twisted interpretation.
Nazi behavior is the fault of the humans who engage in Nazi behavior and blaming anyone else is just making excuses for Nazis.