I guess the most telling (and damning) statement from the above review is Ebert commenting upon Dylan's lack of generosity showing in such stark relief against the backdrop of everyone else's obvious generosity.

What continues to baffle me are the reasons why those actors who decided to "do it for Bob" (despite an apparently awful script penned by Dylan himself) put themselves in the film. Do they not know how irrelevant this man and his music became shortly after his disappearing from public view after his split from The Band? That the only generation his music is really going to matter to is his/their own? Do they not get how self-absorbed and self-congratulating an exercise this whole thing appears to be?

Combine that lack of generosity with Dylan's obvious egomania (ie thinking that the world should even care about his views on his own fame), and it sounds like yet another "Dylan vehicle" that I will gladly steer clear of, to avoid a wreck of time.