Deputy Proulx did a commendable job but every situation is different and that is what people who don't have any experience understand.  Police are trained to shot until the threat is ended.  For Deputy Proulx that was 2 shots but for the next officer it could be a full magazine and a re-load.  Doesn't mean one officer did it better or worse than the other.

Gun fights are not like the movies where every shot hits and people drop with just one shot.  2 people drawing and shooting each other from 30 feet away are more likely to miss rather than hit.  You should read up on the 1986 FBI Miami shootout where 145 shots were fired in less than 5 minutes in an area this size of a couple parking spots.  Hardly any of the rounds hit anyone and the suspects themselves took 6 and 12 hits before expiring.  Neither of them were amped up on drugs or anything either.

People can have their opinion but if their opinion is based on Hollywood myths then they should prepare for criticism.