Re: A possible GFDL compromise: a proposal
Section 3 is rather general, and doesn't directly address this issue.
The statement in section 4, because it only "encourages", clearly
shows this is not a requirement.
It can also be taken like how the FSF encourages Debian to "rm -Rf
non-free" on its mirror servers: We can't require you to, but if you
don't, we won't approve of it.
I take it to mean that people are urged not to use licenses like
Yep. We urge people not to use that exception