I donāt think this is right. To the āgoodā side of the wizarding world, Muggles are amusing, piteous creatures that nonetheless represent a threat to the wizarding way of life via their sheer weight of numbers and so must be rigorously kept away from it. An apartheid, aided by a swarm of liaisons and careful etiquette, has thus been created. Intrusion, however unmeaning, is met with ruthless mass mindwiping. Itās done for the Mugglesā own good, you see.
That this is festooned with all the nostalgic trappings of a pre-war Britain makes for very uncomfortable reading if you know anything about the Empire. Rowling clearly wrote this blithely without fully thinking through the implications of it. And thatās fine, particularly in the earlier books! Theyāre just kiddie books about a secret wizard world!
But then the series got darker and heavier, working in concepts of death and wider meaning, and it stands out to me that Rowling never really interrogates the apartheid she constructed. Thereās surely a Dumbledore ramble there about why the wizards squirreled themselves away from the real world, about power and responsibility that they denied themselves. Instead it remains entirely unquestioned. Voldemort vs. Potter is indeed The Third Reich vs. The British Empire, but Rowling never bothers asking whether the latter are anything other than āgoodā.