Agreed, I can't describe the sadness that some of my most treasured nostalgic videos were lost before I knew about yt-dlp, and I can't find out what their titles even were. For example on spotify when music gets removed, if it's in your playlist it just shows it greyed out and unplayable.
Someone at google please give us the ability to see titles!
Not by default. The normal spotify setting is to simply silently remove them. You have to turn on the “show unplayable tracks” preference to know that your playlists have been altered without your consent.
Off the top of my head, did you try to access the URLs via archive.org? That way, at least you'll get the titles.