I think it's worth pointing out that guix will not package proprietary or binary software in the main channels but nonguix exists for those needs if one absolutely needs to have those packages in guix. At the same time guix packages flatpak which allows one to install most, if not all, of the proprietary packages they may want to use. I think the compromise from the guix maintainers is to develop and distribute free software but at the same time being silent on how a user goes about adding proprietary packages to their system. Which is fair IMO.