Yes, it does look like a film scan in bad need of cleaning, but I guess that's precisely what the state of the GOUT was back in 1993. These defects were not visible on Laserdisc, but certainly come out now.

However, this is not a restoration job. The task I set myself was to reconstruct the high definition master of the GOUT. This will of course not result in a perfect representation of the three films, but it is one way of obtaining a high definition version of the original trilogy. As far as I'm concerned that more or less what's been achieved (aside from some imperfections like aliasing).

There are other people on this forum who are far more qualified to perform some sort of restoration.