I haven't seen a YouTube video without a separate audio track. If you use yt-dlp just add -F and the URL to get all available download options/formats. Then use -f and the number of the download option and URL to download the video/audio. Audio on YouTube is available in two formats most of the time: opus and m4a.
TableteKarcioji
I used it on Ubuntu server, because I wanted to cross share my torrents on that network just to keep it alive, however it had a memory leak and would eat all of 32GB of RAM in couple of days. Had to give it up. I even tried to compile it myself, because I read somewhere that one of the libraries caused the issue, but it didn't solve it for me. It's a shame it's not in active development anymore.
I would say let the people who want to stay on reddit have it. This protest was the best thing that could have happened to /r/piracy, because now there is this place with 17k subscribers. I know there was another backup before this, but I don't think it was this popular. And if reddit will go public there is a good chance that that subreddit will be banned or quarantined and at that point it would have been hard to spread information about something like this place.
On the other hand you have Great Chinese Famine, Tiananmen Square massacre and more recently Uyghurs concentration camps and most likely genocide and that's only China.