I agree that the film is not rabidly anti-Robespierriste and that the filmmakers were aware of the history (it's on a completely different level, in that sense than something like A Tale of Two Cities, wherein knowledge of the Revolution as it happened is extremely scant). However, I would be inclined to say that even if it is a film that does not demonize Robespierre (as many do, for the sake of oversimplification), it provides a warped view of the Revolution through the highly inaccurate and typically negative portrayals of just about everyone associated with him. The entire Committee of Public Safety were at best mere caricatures of the actual historical personnages; the only character who had any real semblance of accuracy in his portrayal was Camille Desmoulins, and even he was exaggerated.
In addition, I'm going to have to disagree that with all its inaccuracies and anachronisms Danton is really a good starting point for discussion concerning the Revolution. The Revolution, however some might choose to portray it--and the director of this film acknowledges that this was in large part his goal, was not a struggle between totalitarian Communism and liberal Capitalism; such a view is completely laughable in the view that neither ideology had come into being at the time.

...And speaking of that last scene with Saint-Just, only one who knows nothing about him could believe that he would ever have said anything like that; it's clear from just that one line that the point Danton is making has nothing to do with the actual Revolution.