This thread really scared me so I went and checked my bumper. It is cracked but lucky for me its cracked on the bottom side of the bumper and hasnt spread up the face of it yet. But I will say, these bumpers are not meant to be resilient. I had a lady make a u-turn in front me and I hit her after slowing down to like 3-5mph max (if only there was another 5 feet between us....) and my front bumper practically exploded. I guess the shape just doesnt allow energy to be absorbed well and they just crack.
I would love subaru to acknowledge this issue but I bet subaru wont be looking forward to replacing everyones bumpers. I would love to have a new bumper though, I've got a few scratches and marks here and there I wish would buff out.