OSC was too busy receiving flak for being weird about women and children, and being a homophobic piece of shit
As Hellgod put above me, OSC received a lot of Flak for a *lot* of things, including the fact that they had an entire planet socially and genetically engineered with crippling OCD for no real good reason.
Have you forgotten Max Brooks's brainworms so quickly? There are differences between Brooks's brainworms and Card's brainworms, of course, but it's the same principle.
More seriously, Ender's Game and OSC's other works don't present themselves as A Gritty War Documentary (where the war happens to be against zombies), they say 'we're scifi, we're fiction, buy in'. It's about different premises and genres.
Have you actually
read Ender's Game? It's not presented as a documentary, of course, but it's very much a war story, not a goofy sci-fi tale. It focuses on officer training and (to a lesser extent) politics, but it's still a story about war.
As for the grit...well, children don't get eaten alive, but one child
does murder other children. Also the
formic genocide, that's kind of an important plot point. And there are plenty of references to other heavy topics, from prejudice to suicide.
Additionally, as I understand it, most of the IC 'it's supernatural' stuff is partly, well, the fact that the zombies don't make biological sense and of course survivors would have different explanations as to why.
In-character stuff is one thing. Out-of-character stuff is another. And plenty of the mockery of WWZ for daring to ask us to extend our suspension of disbelief to the existence of zombies is, explicitly, out-of-character.
The idea it's some kind of uneven conspiracy by the Evul Forum Users seems very silly.
Fuck off, I never implied anything evul or conspiratorial. No conspiracy or malice is necessary for a lot of people to share a bad take.
But Ender's Game isn't a story about the Aliens, or the Little Doctors, or the FTL, they are set dressing that everyone lives with as facts of the setting.
Ender's Game is as much a story about aliens and warships as
World War Z is a story about zombies. Both are using their sci-fi premises as a vehicle to discuss warfare and society. There are plenty of differences (Card seems
way less enthusiastic about warfare than Brooks), but their relationship between premise and narrative isn't that different.
The Zombies of WWZ get repeatedly and vigorously insisted that there is no magic shenanigans, that they exist purely through scientific means, and can be understood through the scientific process.
I don't understand how this is distinct from Mazer Rackham insisting that humanity reverse engineered formic telepathy to create the ansible.
WWZ Zombies only obey rules so long as they serve the Author's own biases, while OSC (for as problematic as some of the elements of their story get,) obeys the rules of their own setting.
You could say the same thing about Orson Scott Card. "Oh, so in the first two wars they don't understand humans well enough to realize that killing individual drones could cause an incident, but by the end of the war they've somehow read Ender's mind well enough to make a whole giant playground thing out of his memories of that video game at Battle School?" A lot about the formics is arbitrary. A lot about
Ender's Game in general is kinda arbitrary, if you're willing to pick at it—things that the genius kids can't figure out despite being geniuses, or how the Giant's Drink game was somehow invented on the fly, or that Ender Wiggin is so special that he does all sorts of basic things that no one has thought of before.
The things that Ender needs to do first, no one else has thought of. Formics work the way they need for OSC's thesis about warfare to make sense.
The difference is, to be blunt, that Card is a better writer than Brooks.
(Also that Card recognizes wartime mass murder as a tragedy and gives it appropriate weight.) And that has
nothing to do with the plausibility of the science-fantasy nonsense he built the plot on.