Some of the recent reviews have some interesting statements:

http://www.huffingtonpost.com/marshall-fine/huffpost-review-ithe-peop_b_856765.html

There's also an entire underground phenomenon of people who have taken the various films, downloaded them to their computers, then reedited and otherwise changed them.

http://movies.nytimes.com/2011/05/06/movies/the-people-vs-george-lucas-a-documentary-review.html

There is one notion he doesn’t introduce, perhaps understandably: that the original “Star Wars,” the skeleton key to the geek imagination, was skillfully assembled, viscerally entertaining and (spoiler alert!) not very good.

http://www.movingpicturesnetwork.com/11725/the-people-vs-george-lucas-documentary-2/

Yet there’s more to “People” than just fanboys and girls emoting over the highs and lows of their tangled relationship with Lucas, and to Philippe’s credit, he explores larger ideas. Namely, who owns art? Is the creator given infinite time and resources to change art once it has been released into the wild? Or once it has been set free, does the public that consumes (and sometimes re-imagines) it then have some stake in what it turns into?

So general reviews seem to be missing this last point. We'll see if further reviews learn from the blogosphere reviews.