>RMS didn't say that. He only said that GNU shouldn't endorse or assist the use of nonfree software, even for blind users.
This is my interpretation too.
I think many people forget that the FSF and the GNU project are just organizations with a purpose: the advance of Free Software. They are not the only projects and organizations out there, and sure Richard Stallman does not speak for everybody, nor does he pretend to.
I often see comments that seem to imply that we should expect some kind of "moral" guidance from the FSF. That's just silly. The FSF has a set of principles to guide *themselves*. You can share them completely, in part, or not at all, but one should not "outsource" it's own moral behavior. In particular, the fact that the FSF doesn't endorse the use of a proprietary tool doesn't mean that people can't use them if that's what they think it's best for them.