The linker can inspect a direct link to see where it was pointing, in order to find it on archive.org or to contact the linkee and notify them the link went dow

The linker can inspect a direct link to see where it was pointing, in order to find it on archive.org or to contact the linkee and notify them the link went down. If a shortener goes down, the linker only has the obfuscated url, and has to rely only on their memory to redirect the link.