Whether one agrees with it or not, explicitly removing non-free software or the mere suggestion to install non-free software has consistently been a FSF litmus test for about twenty years in order for them to label an operating system as "truly free". Leading to exchanges such as the following in 2007 when Stallman remarked that he could not in good conscience recommend OpenBSD as their ports collection had wrappers that would allow the user to install non-free software more easily:
Key part: "Since I consider non-free software to be unethical and antisocial, I think it would be wrong for me to recommend it to others. Therefore, if a collection of software contains (or suggests installation of) some non-free program, I do not recommend it. The systems I recommend are therefore those that do not contain (or suggest installation of) non-free software."
https://marc.info/?l=openbsd-misc&m=119730630513821&w=2
Key part: "Since I consider non-free software to be unethical and antisocial, I think it would be wrong for me to recommend it to others. Therefore, if a collection of software contains (or suggests installation of) some non-free program, I do not recommend it. The systems I recommend are therefore those that do not contain (or suggest installation of) non-free software."