Yeah, keep your "hoo-ha superhero nonsense away from my Fighter!". Usually accompanied by 'Guy at the Gym' fallacies.
Look, if someone likes the narrative of "the ordinary guy who fights monsters", the John McClane of D&D, more power to them. But it's worth noting that, as the Die Hard franchise continues, John becomes more and more capable of unbelievable feats such as taking out helicopters with cars and resisting high levels of radioactivity, to the point that he's no longer an "ordinary guy in an extraordinary situation".
I think continuing to treat any class as such for more than a handful of levels runs counter to living in a world of strange magic and terrifying monsters. But hey, you still find medieval castles in D&D worlds, despite the existence of so many threats that make their defenses moot, so maybe this is just an example of the weird schizo tech most settings run on. The Gods want castles, articulated plate, and regular soldiers with 200 hp, whether or not it makes any sense in a world of giants, dragons, and 40-level megadungeons.