I tend to agree with this. One of the things which struck me about gang violence in LA is that if you have even one gunshot wound you really are out of action. Contrast that with pretty much every depiction on screen or television where people continue fighting.

There's two equal and opposite misrepresentations of reality. If you're not either the main bad/good guy then a single gun shot or punch will take you out completely. Often people fly backwards from a gun shot, which is just crazy. Conversely, if you are the main hero/villain, you can probably get shot 10 times and be beaten with a lead pipe across the head quite a few times and still be going along just fine.