That’s what we did at !japaneselanguage@sopuli.xyz
Which is honestly not a spin-off of r/japaneselanguage because that subreddit was a complete mess. But so was r/learnjapanese. I don’t get the optics of a Reddit spin-off because that’s like tying your community to the expectations and behaviour of a previously community that could will be improved upon.
Then again, music streaming services pretty much removed music piracy from mainstream usage altogether. Obviously people in this sub still pirate music, but it’s so uncommon nowadays, I’m sure many people wouldn’t even know where or how to find it.