Technology

You can reach out to the EFF. They took an interest in youtube-dl. However you have a major hurdle to overcome:

RIAA argues that since youtube-dl could be used to download music owned by RIAA-member labels, no one should be able to use the tool, even for completely lawful purposes.

This is an egregious abuse of the notice-and-takedown system, which is intended to resolve disputes over allegedly infringing material online. Again, youtube-dl doesn’t use RIAA-member labels’ music in any way. The makers of youtube-dl simply shared information with the public about how to perform a certain task—one with many completely lawful applications.

--https://www.eff.org/deeplinks/2020/11/riaa-abuses-dmca-take-down-popular-tool-downloading-online-video

IANAL but probably shouldn't have video on the site showing it downloading copyrighted music. I think that's the crux here.

https://www.eff.org/about/contact

Good luck, but I think you kinda shot yourself in the foot.

EDIT: if you read the complaint, it's not for hosting content, it's Anticircumvention. 17 U.S.C. Sec. 1201 (a)(2)

(2) No person shall manufacture, import, offer to the public, provide, or otherwise traffic in any technology, product, service, device, component, or part thereof, that—

(A) is primarily designed or produced for the purpose of circumventing a technological measure that effectively controls access to a work protected under this title;

(B) has only limited commercially significant purpose or use other than to circumvent a technological measure that effectively controls access to a work protected under this title; or

(C) is marketed by that person or another acting in concert with that person with that person’s knowledge for use in circumventing a technological measure that effectively controls access to a work protected under this title.