People tend to generalize faith as what deity and set of morals you believe in. So when people hear this word they think of big picture things instead of small everyday things. Some of the things mentioned in the video (having faith in medicine you take, having faith in traffic laws being obeyed, etc.) are all things that we have been subjected to since we were very young. At this point, that exertion of faith may seem so rote that they do not even realize it as faith.