Updated: i cannot imagine why this extension is "recommended". It was made for those who cannot in command line even a little. While yt-dlp just downloads mp4, this extension says "oh EVERYTHING in internet is on HLS now so give me money".
Does moderation even exist here?

It works on free and no-adp-problem yt-dlp project. Then it spoils original video with ad and asks for money. It's obviously a crap/scam.