I expect this post in a couple days: “How do I remove a paper towel that is frozen to my bottle of wine?”

Is this the procedure you used?

https://superuser.com/questions/1752396/how-to-download-all-videos-with-yt-dlp-from-a-youtube-channel-after-the-redesign

I expect some apps to eventually allow a user to merge like-named communities into a single “virtual” community. The Connect app already moved towards this by presenting your subscriptions grouped by community named, rather than instance. So I see all my “technology” communities listed next to each other, for example.