I presume they are very selectively oblivious, like that Mockingbird writer who asked where all the female superheroes were
I thought the main theme was about fighting Evil Wizard Nazi’s and Bigotry which are inherent in wizard society and possibly to be paranoid of them as they definitely exist an entire Wizarding Hogwarts House was made of evil nazi kids
And TBF inbreeding is a bad idea.....I bet those Purebloods have all at least one or two muggles or muggleborn ancestors in their family lines, some more recent than others
Harry Potter gets basic good vs evil right, but that's about it.
Harry's only notable abilities come from talent, not from dedicated hard work and effort. Only in book 4 is he shown to engage in any exceptional level of effort to prepare himself for a challenge at all.
The general tone of the story reinforces a mediocre work-ethic. Hermione is the only hard-working character, and she's generally portrayed as excessively so, and that Harry and/or Ron are more 'normal' or 'healthy' with their usually-slacking efforts.
The characters are static. There's no significant maturation displayed past the first half or so of book 1. The struggles they have in every single book thereafter, are the exact same characters. They are eternal children/adolescents.
The entire setting lore and mechanics are utterly incoherent. A marginally-competent graduate of the 'everyone attends' school (Hogwarts) can magic up shelter, temperature regulation, bedding, protection, offense, literally everything but food. And even food can be
extremely easily procured indirectly. Yet this has no discernible effect whatsoever on the economy.
Authority figures are simultaneous helpless and/or incompetent, and to be followed with cult-like trust. This is very complicated, but note that the endgame of the entire series is built out of Harry following through on Dumbledore's byzantine plot that depends on secret magic, when not only did the protagonist not even
know about the plot,
Dumbledore actively did not tell them.
Victory is not earned, it is
given, simply for 'doing the right thing.' Again, the
only time that the protagonist does anything to
earn victory, is in book 4, and
even then, it's
still only given to him because of adult figures interfering to hand it to him on a silver platter.
Good People Don't Ever Kill People. This is taken to an absolutely absurd level, not until the
final battle at the end of the series, do we ever hear of
any villain character being killed by a 'good guy' (with possible/partial exception of Quirrel), but we don't hear about them
dying at all. Yet, the villains are full-up conducting a war against the heroes, casually tossing around lethal attacks. In spite of all this, Harry and co
repeatedly not just use non-lethal measures, but consciously choose to release alive people who have just tried to kill them when they've been defeated. One particular Death Eater, they catch and release
three times over.
Related to the above, some characters who are
blatantly villains, and conspired to murder and similar, are allowed to get off scot-free, because... no really discernible reason, honestly. Snape (killed by Voldemort yes, but not jailed or executed by a court of law as he should have been) and the Malfoys being the most salient examples. The huge numbers of Death Eaters who were let go after the first war against Voldemort, in spite of the setting have multiple mechanics that functionally compel truth-telling just make this even worse.
On the whole, the story of Harry Potter overwhelmingly communicates a message that Logic Doesn't Matter, and victory or defeat comes entirely as a product of plot fiat.
I say all of this as someone who very much enjoyed the series when I was a child. I had to be into my 20's before I started realizing how disturbing and false some of the themes and communicated messages of the series are.
When you consider all the above, it makes quite a bit of sense for a generation raised on it to produce an entire social class of activist people who idolize it, and refuse to engage in more profound thought to understand the world around them, instead insisting that villains
must be simplistic caricatures, and that simply by standing up and speaking, they'll somehow win.