Devil's advocate: You may find that it better achieves your goal to provide packages and say "For power users testing only". You might also be able to petition Debian to have it removed if it's leading to people foot-gunning.

If I can help with deb/rpm packaging, let me know. I'm a power user here, excited about bcachefs, but haven't tried it because I don't have the time to give it a worthy test (remembering how much time I put into getting ZFS stable on Linux). Thanks for your hard work on it!