Excuse me, while this point may already have been discussed, IMHO this is a subjective Point. Anyone should decide for him/herself if [s]he is fine with non-free Software.
This is a question of ethics, on which people can disagree. The Free Software Movement has a position on this question; in fact, our position is the focus of all our activity. We advocate the replacement of non-free software with free software.
This main purpose of making this comparison of distributions is to spread awareness of that ethical position, and help people who agree with it to act on it.
Comparing what the distributors *say* about the issue of freedom is an important aspect of this. They are free to choose what to say, and it makes sense therefore for us to judge them by the choices they make.
The people who read this comparison are free to disagree with our views, but that is their worry, not ours. Our job is to do as good as possible a job of promoting them.