Hmmm... could be. I wonder, though. There does seem to be something on the surface that wears off and I don't think it's the top membranes - at least not initially. I know about the plate rolling which closes the surface to better accept a final finish or polish.
Another myth may be in the offing...
All you 'gotta do to know is cut a small square of terry toweling, about a 1.5" square ought to do it. Get some mink oil on one side of it and lay it on the saddle (better yet, get some benefit out of it and use two squares, placing each where an ischial tuberosity contacts the saddle).
After less than a day, you'll get what you'd get if you left a potato chip on a brown paper bag.
