Done to limit damage to pedestrians in the event one gets collided with.
Older style lower, aerodynamic, front ends typically knock the legs from under a pedestrian in an impact - their body falls onto the bonnet & head impacts windscreen. This is not good for the long term prospects of said pedestrian.
Taller, flat fronted, front ends push the pedestrian away from the vehicle, preventing said head-windscreen interface. Pedestrian has more chance of getting to limp away from the encounter.
I have always though it better for pedestrians to avoid stepping in front of moving vehicles & avoiding the situation in the first place. Even a casual observer can appreciate that 70-90kgs (I'm being generous here) of soft, flabby ped is going to come off worse when confronted by a tonne & a quarter of moving steel, plastic & glass.
Bring back Tufty !