I understand where you are coming from. Honestly, I do. But you are making a judgement from the saftey of your home or workspace about the actions of an officer who was doing his best under extreme duress to try and stop this man without deadly force, but was unfortunately unable to do so. It's a shame, but it's what happened.
Also, "shooting to wound" isn't a real thing. No law enforcement agency uses this as standard practice that I know of.