I have a car door equivalent in NYC. As a pedestrian in Manhattan you have to be very careful of the person walking in front, or to the side of you. Sometimes they stop, or turn suddenly. Sometimes you crash into them. Sometimes you are just stopped and someone crashes into you.
At the end of the day - even a walker has to have a head on a swivel and must walk a cautious speed to avoid collisions. This cyclist was being a hard-riding numbskull, as well was the girl opening the door without looking.