Interesting and I wonder if there will be a reply from Markus Bock. If he doesn't make some kind of statement he will just appear guilty.
If the route can be climbed without the chipped holds then perhaps they should be filled in. The first person to reclimb the route should rename it and be credited with the first ascent. The Frankenjura rock is very different to the limestone here which is continually breaking off and often needs some glue to hold it together.