Yes. Excessive camber definitely eats tires but contact patch under cornering load is the name of the game...particularly for the folks in this forum.

Basically, negative camber compensates for the inevitable geometry changes while cornering and keeps more rubber on the road/track.

-2* is relatively mild for a dedicated handling set up. I suspect that any negative camber that we can get up front is extra valuable since the only way to get that in the rear is not going to help the longevity of your drivetrain.