I should hope that’s not true, as it would not only add grain, it would also cause needless generation loss. It’s better to keep everything in the digital realm as much as possible for this kind of project. I for one would much rather see the film restored as clearly as possible than try to recreate precise amounts of grain when I can assure you Lucas never would have wanted any grain at all if he was capable of avoiding it at the time. Grain is something I consider merely an artifact, not an actual part of the original cut.
Grain is an inherent part of the film format. It should be there as it represents what the original film is.
I’m not saying scrub it so clean that it looks bad or completely sterile, but as much clarity as possible should be extracted from the films while still looking natural. We’re not going to be watching them on a 35mm film projector, we’ll be watching them on digital HDTVs and digital projectors. They should be optimized for the digital format. I don’t get the obsession with artificially recreating the byproducts of past technology that were never intended to be there. If something can be done to remove them with newer technology without overdoing it, then I don’t see the problem with it.