The area with the craters can't be the bearing surface. That has to be steel and IME the balls would shatter before making indentations like that. My guess is that the cone adjustment slipped enough to let some balls fall past the cup&cone and lodge up against the softer aluminum further inside. But I'm unable to determine where that bearing surface actually would be on the pics.
I'd say it's a warranty job, and that it means a new hub to get it fixed.