The bolt is certainly not the cause of the damage. Until you're certain the cause has been addressed, I would not allow the bolt to drop home. You might try sliding the BCG (no recoil spring) back and forth in the upper so you can watch the bolt as it meets the ejector.
You didn't include pics of the carrier that show the engagement surface well, nor the face of the bolt. With that kind of damage on the bolt, I'm guessing the carrier is also damaged.