A property it shares with most cars of its era and some even now.
The flat area for the radiator, the bumper heights specified for the US market, the flat headlights pointing forward and the windscreen being quite upright in a small car, are all difficult to get aero dynamic, especially if you don't have much money, or see much need, for wind tunnel testing. The back of the car has far less constraints on it's sculpting.
The cars which weren't more aerodynamic going backwards wasn't because the front was any better, but that the back was even worse. VW Passat, any Volvo, etc, etc.
The impetuous for sorting out the aerodynamics didn't come until the battle for better and better mpg had exhausted all the easier options.