Earlier quoted context omitted.
I think it’s very worthwhile; it allows readers to judge the legitimacy and relevance of sources for claims made.
A big gripe I have about youtube links: I can't learn anything about the video from the link. Once in a blue moon a youtube source is actually good. But the odds are so low that I often wont even bother clicking.
YouTube links are automatic ignore for me. Video that isn't a sound byte or "here is that thing happening exactly" is a horrible way to consume information related to a discussion.