True, but the officer was lawfully there and in the performance of his duties. He did make a mistake and there is certainly civil liability. After reviewing the video, I am not sure what the DA or AUSA could charge him with. it will likely be presented before a grand jury and no billed. The Department will be sued and will settle for a large sum of money.
I agree this officer may not be cut out for the job. As I get older, my critique of younger officers is that they are too trigger and taser happy. As outraged as I am about this old man getting shot, I have to refocus through the lens of how I might have responded as a uniformed officer during this stop. The simple and honest answer is that I just don't know. Remember what we see and are processing from the dash cam are not necessarily the same as the officer is at the time.