For what it's worth the association with GNU is basically historical at this point. RMS has never accepted the original vision of the project (to be the official GNU OS) and the project outgrew GNU's dilapidated infrastructure a long time ago, which the project is finally addressing with the migration to Codeberg. The FSF gave the project a place for people to donate specifically to Guix but have never really embraced it, otherwise. That has been superseded by a dedicated European nonprofit for Guix. The most recent Guix Days gathering before FOSDEM featured a lengthy conversation of breaking ties with GNU entirely but no decision has been made on that, yet.