> Generally, not, because vicarious liability for battery and wrongful death doesn’t work like, e.g., contributory copyright infringement.

Judging by youtube-dl, it seems like it does work that way, at least in my jurisdiction; I guess we'll see if the RIAA doubles down on trying to wipe it from the face of the Earth, but considering there hasn't been much noise, I wouldn't count on it. Also, to my adjacent point, I highly doubt the RIAA would've refrained from attempting to take down youtube-dl even if youtube-dl's license prohibited its users from circumventing DRM with it.