That's the correct thing to do. If you neglect to do that and try to rush the person on to a car or something without proper pre-hospital care training, the person will just bleed out in the car. Whatever a pressure dressing won't help, won't be stopped without an operating room by a surgeon.

A person with a bleed will survive for much longer staying put with proper pressure over the wound than a person being moved about. Oftentimes, people in panic also forget to call for help. Most first aid preparation is about drilling people to stop panicking and actually call for those who can and know how to help. Crisis, War or not, you are, most likely, not a surgeon or a paramedic, and you don't have a surgery room in your house. There's nothing that a pamphlet can correct in that case.