Good article!
Just one nitpick: Weimar cannot be called the center of German Enlightenment. That title would probably go to Potsdam/Berlin. Not sure what Weimar's claim to Enlightenment would be - there was Wieland in Weimar during the German Enlightenment, but he was a poet and not theorist of Enlightenment.
Perhaps the author is conflating German Classicism and German early Romanticism with Enlightenment.