I see it attracting more people than it dissuades. You can use jj as just a prefix for Git commands like jj git init. Yet you get supercharged repo navigation abilities. If obscelecene is your concern, jujutsu is VCS agnostic and doesn't have to use Git in the future.
Nix is as simple as it gets, even better than docker. Just 'nix run' whatever flake file someone gives you and everything works magically.
This codeforge going away can't happen for me because I self-host it.