@sally @Suiseiseki @SuperDicq
Gentoo is also great at doing this separation IMO. By default you can't install non-free packages, it informs the user the license of the package and then lets the user decide to set permission for the individual package or system wide. You can't accidentally use non-free on Gentoo.

The only thing I might change is an easier way to accept for singular packages. Many users may be required to accept BINARY-REDISTRIBUTABLE license as mandatory firmware (for their system) and perhaps a one time accept may be better as often the user will opt to accept non-free licenses system wide rather than only one package.