I believe that when they mastered the video for the GOUT discs, they applied a blur in the vertical direction possibly as an attempt to mask the jaggies/aliasing (which you'll notice is much worse in the non-blurred X0 files).

The GOUT video has less vertical detail than the laserdisc video. However, it has more horizontal detail because DVD has a higher bandwidth/more resolution than the laserdisc format.

It might be possible to reduce the jaggies but retain the detail using interpolation (nnedi, etc.) as an alternative to applying a simple vertical blur.