I’m not sure how accurate it is. (Luther’s moralism? For the person who insisted that salvation is by grace through faith, rather than good works? Well, maybe so. Maybe this is evidence that an emphasis on faith really does bear fruit in good works. But “dour,” for the most uproarious of theologians? “Lutheran socialism,” finding the origin of the northern European welfare state in Luther’s neighbor-centered view of vocation?)
But that Luther influenced Germany’s love of music, emphasis on education, love of books, work ethic, etc., rings true.
UPDATE: Note the critique of this article by German journalist and confessional Lutheran Uwe Siemon-Netto in a recorded interview on Issues, Etc. (HT: Jeremiah Oehlerlich & Carl Vehse)