The notices don't have to be disclosed to anyone but the alleged infringer. The URLs don't have to be hyperlinked either. This is one part of Google giving the trolls a middle finger.
Google should index them all on a separate page. For science of course.
More than once I've done a search for something pedestrian (no intent for piracy/etc) only to notice the "some results removed" link. Out of curiosity I've clicked it, just to see what crazy things have been removed, and been quite amused/interested in the results.