https://www.gamesradar.com/hogwarts-legacy-gets-psychological-horror-and-world-war-ii-tags-on-steam-in-apparent-user-protest/
https://www.gamesradar.com/hogwarts-legacy-gets-psychological-horror-and-world-war-ii-tags-on-steam-in-apparent-user-protest/
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I'd advance at least the possibility that Harry's patronus being a white stag is related to the white stag as a persistent symbol in European mythology.
It's not. The concept is more broadly called a tutelary deity, and it emerged independently in many unconnected cultures throughout the world.