I think you're mistaken, masters like ALIENS are degrained then regrained the Lowry way. Cameron is on record on this process. This same was applied to T2 as I described. There is only a 4K scan with grain of the film prior to all the digital fixes.
At this point, I'm convinced that the old saying, "Nothing is certain but death and taxes," should be amended to, "Nothing is certain but death, taxes, and yet another home video release of T2 and Evil Dead."