Hm, but youtube-dl doesn't break DRM. You can just get the video link from the dev tools panel when you open a youtube page. It doesn't let you download anything you wouldn't otherwise be able to.
DRM is ultimately mostly obfuscation. And access to the video fragments in YouTube is heavily obfuscated.
There's very little case law on what the exact level of protection required to qualify, but I wouldn't want to go to court defending myself offer it. It's very risky.
Have you actually tried that lately? Particularly with a DASH stream? (Not that DASH itself is intended as DRM, but just that it's no longer anywhere near as simple as querying a single URL.)