The concern that I have is that is misleading and arguably plain wrong. i know such caricatures abound in potted histories but that does not make them right. Evolutionary theories go back before Aristotle, as do arguments against essentialism. Also, before Darwin, in fact, essentialism was already pretty much dead for centuries due to people like Bacon, who also cited Greeks. And the difficulties about making simple statements about essentialism are a pandora's box.    