This graphic was originally designed to help NYPD officers spot people carrying (its illegal to carry in New York City). This is also useful to remind those of us who live in places where it is legal to carry concealed (read: Free States) that these are mannerisms to avoid.
The exception I see below is the 'Upper body shift'- while you shouldn't shift every time a person walks past you there are times you can use this movement to deter potential threats from coming closer to you. If the potential threat don't stop you have now put yourself in a better defensive position if you have to draw. It also helps put you in a natural position to move to your 5.