At this point, link rot is an axiom of the internet. In the face of this, I store a personal offline archive of anything I want to see twice. When I see a cool YouTube video I like, I archive the entire channel right away. Rather than subscribe to it, I update my archive on a cronjob. I scrape content out of RSS feeds and into offline storage and I have dozens of websites archived with wget. I mirror most git repositories I’m interested in. I have DRM free offline copies of all of my music, TV shows, and movies, ill-begotten or not.