Upon seeing the title and by-line for this piece, I thought that it may be an interesting take. Upon reading the piece, I was sorely dissappointed.
This is one of the dumbest pieces of "journalism" one could imagine. Moore's "documentary" has been widely discredited as being full of lies, deceit, and untruths. His "Acadamy Award winning documentary" from a few years ago may have been given the award, but if memory serves, the award was later revoked because it was later realized that what he presented was not a documentary at all, but a fictional comedy framed around some tragic events and presented as a documentary.
If there is anything to be learned from Moore's hate-filled "documentary" it is how not to deal with the current FLOSS advocacy. While you say that Microsoft has probably donated money to the Bush administration, in reality, most large corporations, with few exceptions, donate similar amounts of money to both major parties. What Moore's film teaches is that one-sidedness and hatred can lead one into making up the truth as one goes along by ignoring that which doesn't support one's point of view, assuming far-fetched theories are true, and in some cases manufacturing facts.
Moore's sophmoric rant which ended with a quote from George Orwell is nothing more than what Orwell himself described in 1945:
The majority of pacifists either belong to obscure religious sects or are simply humanitarians who object to taking life and prefer not to follow their thoughts beyond that point. But there is a minority of intellectual pacifists, whose real though unacknowledged motive appears to be hatred of western democracy and admiration for totalitarianism. Pacifist propaganda usually boils down to saying that one side is as bad as the other, but if one looks closely at the writing of the younger intellectual pacifists, one finds that they do not by any means express impartial disapproval but are directed almost entirely against Britain and the United States …
What needs to be remembered in FLOSS advocacy is to make sure to not be completely one-sided, to maintain a full view of the facts, do not view the other side as pure evil (remember that they are human too, and are not demons trying to drag us all into hell), to avoid presenting conspiracy theories as facts, and mostly to avoid hateful mudslinging.