I don't know who "They" are,but somebody needs to slap some sense into them. You could miss a Buick at 10 feet if you're trying to shoot that way. Form a triangle with your back being the back side,your two arms being the left and right angles,and the centered handgun being the point. If you are holding it out in front of you and facing and looking at your target with both eyes,it's damn near impossible to miss. You need your eyes open and looking at your target instead of your sights so you can see where the bullets are striking him to adjust fire,and to see how he is reacting to the bullets that are striking him. If he continues to bring his gun to bear on you,this would be a excellent time for you to step to the side as you continue to face him and fire. You won't see him doing this if you are focusing on your sights. Neither will you see any of his buddies coming to his aid from the side. Or as far as that goes,if you are being attacked by more than one person,your ability to see the first attacker you are shooting going down gives you the instant option of transfering fire to his buddies. This could be worth a couple of seconds to you. Seconds that are vital for your survival.
My training covers this point too. If you have time to align your sights you take two shots, then a quick look at your assailant. If your target is down, a fast glance to the right and left sides of you. After this is completed you look back at your assailant and check him out for two seconds, then scan the area for any remaining enemies. If the area is clear it is time for a tactical reload. Reload your pistol then look around. If area is still safe, reholster your weapon.