It only makes sense if your final objective is to lessen the tailgating experience for certain people.
It can't be money, because we'll pay whatever they want.
It can't be safety, because this increases car travel through the tailgating area.
It can't be to improve the parking situation, because they've just thrown hundreds of cars into the other parking zones that weren't there in the past.
Here is another question. When will they allow vehicles back into the tailgating area? Let's say not until after the game. Imagine the Chinese fire drill that will ensue with everybody picking up at the same time, after a full day of liquid courage. Cluster F.