Is youtube-dl going to stop working? I assumed the problem was limited to having the repository taken down, but are they pushing to get the service to be defunct entirely? Short of not allowing them to publish the code or executables anywhere, that would require legislation passed to prevent existing and future packages in Linux repositories to be banned, or a major change in how it interacts with YouTube from YouTube's end to render it useless.
Are there indications that development will halt, though? That was my question. Being deplatformed from github doesn't stop them from maintaining it, even if it might reduce the visibility/number of PRs.