

Of course it have the relation to the core philosophical disagreements of the openly bigoted antagonist versus the essentially neoliberal protagonist.
But that doesn’t mean readers should overlook the plot holes. Addressing these inconsistencies would make the story’s themes and message far more convincing and easier for readers to accept.





I like this interpretation. And I checked the book does not say the spell rebounded.
But it did say “Harry saw Voldemort’s green jet meet his own spell, saw the Elder Wand fly high, dark against the sunrise, spinning…” So the avada kadavra is cast before expelliarmus hit voldemort.