Or were they so convinced by their ‚Aryan supremacy‘ that they didn’t conceive of the utility of said fleeing intellectuals?
Nazism had a strongly anti-intellectual tradition. SA street fighters had targeted intellectuals, who were associated with Judeo-Bolshevism and contrasted with Blood and Soil farmers, manual workers and soldiers. As such, the idea that intellectuals were important to the regime was antithetical.
Or were they so convinced by their ‚Aryan supremacy‘ that they didn’t conceive of the utility of said fleeing intellectuals?
That is almost exactly what Hitler said. Max Planck, the leading German physicist of the time, made direct appeals to Hitler over the expulsion of hundreds of Jewish scientists, and was rebuffed and told that Nazi Germany had no need for them and gave the rather infamous reply that even if the dismissal of Jewish scientists was bad for German science "then we shall do without science for a few years". (This is quoted from Reason and Wonder: A Copernican Revolution in Science and Spirit by Dave Pruett.)
Quantum physics is the most famous academic discipline affected by Nazi policies, but not the only one. For example, Planck had made his appeal based on the importance of Fritz Haber, a chemist, to the German First World War efforts. Chemistry, anthropology, medical sciences, and even social sciences such as economics, were all affected. Even Hjalmar Schacht, who was more critical of Nazi economic policies, worked to further forced emigration policies. (Surviving the Swastika: Scientific Research in Nazi Germany by Kristie Macrakis.)
So no, in general, the Nazi regime denied the validity of the intellectual disciplines associated with the emigrants (for example, they embraced the Deutsche Physik school of Lenard and Stark, which only declined once Werner Heisenberg became the pre-eminent physicist in Germany, instead of quantum physics). Psychoanalysis was similarly treated. (Death of Jewish Science: Psychoanalysis in the Third Reich by James E. Goggin & Eileen Brockman Goggin.)
Greetings. Not discouraging anyone from providing additional information, but do check out these older answers :
Did Nazi Germany have scientific superiority in the world for its time? by u/restricteddata
What was Hitlers reaction on Albert Einstein getting his American citizenship 1940? by u/Georgy_K_Zhukov