People have watched too many movies

Movies have ruined the trope, as well. It used to be "this shooter is so fucking good at shooting people they can hit a specific body part at 400 yards with a pistol. Everyone else has to aim for center mass even with scopes."

Then that got copied and eventually turned into shorthand for "gun toting hero badass," which caused writers to start making villains with "this bad guy is just as good with a gun as the protagonist," which has now gotten completely lost in the sauce. It's like kids arguing who can beat up whose dad or whether Goku could beat Superman. Except now it's blended over into reality where people think superheroes are real.