The FSF has very scrupulously never addressed the topic in public at all, to my knowledge.
Eben Moglen didn't reply to my questions on the topic.
My opinion is that it will take explicit legislation before we can have any clarity on the
subject. In the meantime, we only need to worry about a few specific packages that have been
retracted, and even there we can limit our actions to worrying. If the copyright owner starts
bothering people, we have a known workaround. In Linux, we might find a driver must be pulled
out, and maybe distributed separately.