I take GH/Microsoft won't implement any punitive counter-measures for frivolous 1201 claims? Their new claim processing appears to be fairly resource-heavy. It'd be only fair to recover some of the costs they will end up sinking into it.
Sincere question: What kind of punitive counter-measures could they implement here?
YouTube-DL could potentially argue Slander of Title, which is well established in terms of claiming ownership of another person's copyright. Claiming someone else's intellectual property is inherently illegal seems pretty similar.
It would be hard for YouTube-DL to prove damages, but with a showing of intent there could be room for punitive damages based on what the RIAA thought they stood to gain.