Entertaining, but not realistic.
The gunman uses the same position throughout, either one or two handed at face height, full arm extension. This is the best gun arm position beyond 10’ in distance, but closer than that it has problems. Within 10’, hip height close to the body is much better, aiming for center of mass, not head, in either case.
Likewise, with a glance you can probably tell if they are capable with a gun. Of course, if they are holding their gun “gangster style”, sideways, they are idiots. But if they are brandishing at your center of mass or belt buckle, don’t even think about it.
True...and reminds me of something I recently read, author forgotten, but to the effect: "overheard in the dojo---"You're not attacking me correctly".
Meaning: "I can't show off my super-duper ninja spiderlock cobra defanging crap unless you make it easy for me".
Never, ever bring an MMA war story to a gunfight.