I loved the heck out of that extension was also one of the early people giving feedback waay back, ended up just piping my playlists to youtube-dl via a cron near the end. I do recall reading a back and forth email convo between you and Yt where it seem they just randomly axed it for some opaque reason but thanks for the clarification. Thanks for the reply and tips!

Edit: Apparently this is explained in the article I linked above, I just grabbed a random one to link to. I hadn't looked into it other than the imgur email chain.