Stallman's opinions for how the world should work and his predictions for what will happen in the future are not "truth."
I think it's totally fair to look at something he's said or written in the context of a guy who has been right in the past. But that doesn't mean everything he says is beyond reproach.
Do you honestly think that truth needs to be discussed and decided? The man - as much as I dislike him and his behavior - got it right. and it isn't the first time too. Sure some of his statements might seem too outlandish at first, but many of them happen. Anyone remember this http://gnu.org/philosophy/right-to-read.html ?
I simply cant fathom the reasoning of people who are quick to ridicule any idea that does not fit in their image of how the world works.