Hardcore gamer = someone who plays only cinematic grizzed white dude games and/or military fetishizing FPS
Casual gamer = anyone that is not a 15-25 yo male, and/or plays anything outside of the previously mentioned games, especially if those games are colorful.
So basically the gaming community is full of gatekeeping, misogyny, toxic masculinity and general chuddery. They make sure they're the loudest voice heard when anything about games is talked about, and won't be happy until all games a homogenous stream of bland, hyper-realistic but with a grey filter slog of mindless action with no heart or soul. And don't you dare force them to read any dialogue or story.
I feel the same way.
I also think it's an absurd argument to make when the "historically accurate fiction based upon The War Of The Roses(tm)" has highly historically inaccurate costumes, modern mannerisms and smirk-laden sarcastic quipping, a gross misunderstanding of feudalism as a political system where it's basically a corporate boardroom with swords, and of course it has fucking dragons and ice zombies in it.
Usually "historical accuracy" just means chud politics or hog feeding