So this is using "Aryan" in exactly the sort of manner that the Nazis did--referring to the Indo-European (white) "race" as Aryans. The racial theories of the Nazis actually originate in the mid-1800s, although during and after World War II, these theories fell out of fashion quickly.

The term itself comes from the self-demonym of Indo-Iranian peoples (ultimately from Sanskrit), and Indo-Iranian has generally replaced the term 'Aryan' in scholarly contexts to avoid the racial connotations of the Nazis.