If there is anything to learn here, it's that...
- DMCA 512 is wholly inadequate for creators because there are zero protections for false claims (tell me what I don't already know), and,
- DMCA 512 is wholly inadequate for creators because the cost to actually find, takedown, and potentially prosecute infringements of your work is astronomical.
It is a law that makes everyone miserable, except Google, who gets to push papers around and wash their hands of everything.