I've been trying to think of a way to say this without some people thinking I'm being a jerk, which usually means somebody will think I'm a jerk no matter how hard I try.
There are a tremendous number of armed citizens these days like many of the folks on this board, who have taken up the practice of the gun as a combination hobby/martial art/life preservaiton skills. They seek out training in the gun, mostly in courses that focus solely shooting and manipulating the firearm. The single task at hand during those blocks of instruciton is manipulating the gun. As a byproduct of this people tend to zero in on details like grip, stance, minutia of equipment and etc. These things ARE important BUT....
This is very different than being a cop, or even an armed citizen in a violent, or potentially violent encounter. There, instead of focusing on a single thing manipulating the weapon, you are dealing with dozens of things at once, like maintianing a position of advantage, identifying threats in ambiguous situations, and making sound decisions very quickly.
So folks with experience and training in the latter are going to react to viewing these pictures very differently than folks with experience and training solely in the former.
When I look at those pictures, there are a dozen things that jump out at me as being tactically significant. The manner in which he's holding the gun is on the list, but it's way down there.
Does that make sense?