This fuselage failure actually happened where a door could be in the future. These locations are called plugs, if an airliner decides to add the door at some point in the future the plug is removed and a door is added in its place. In this instance the plug was more of a cork and popped upon pressurization.
Considering it was just meant to be a proof of concept and only fly once or twice I would say that 71 flights, a max altitude of 78 ft(24 m), and 10.6 miles or 17 kilometers of travel, not to mention all of the footage from its on board cameras, makes Ingenuity an astounding success.