The prop blades are scrap - no repair of the blades would be possible. Perhaps hubs can be returned to service.
The crankshafts would require an MPI inspection, and dial check of the prop flange, but might be okay. I certainly would not discard the engines because of what happened to them, if the specified inspections showed no defect. Even if the crank(s) did not pass, they can be replaced at engine rebuild.
There are specified prop strike inspections for a reason. If all of the inspected items pass, the engine is airworthy. I worked in an engine shop for years, and saw engines come in with worse prop strikes than that, and they were found to be undamaged following the specified inspection.
That prop damage was gradual, even, and symmetrical. I would not rush to judgement. Same for the airframe - I expect that it will not be scrapped, unless there is difficulty obtaining the needed repair parts.