Understood, just waiting to see where the devs pop up. I imagine that someone will help them with a DMCA counterclaim also. RIAA has been beaten many times, they have a long history of creative interpretation that the courts do not always agree with, and US law is only valid in the United States and Australia (thats a joke, but do hope they get on the brick and road plan or stop acting like a US colony at some point).
That would be true IF youtube-dl was all about downloading YouTube videos only, but it's not. It's used by people to download videos from like a thousand other websites too.