Sorry, I’m not convinced.
The stress placed on a tie by gently rolling it is nothing compared to the stress produced by tying a knot, after all.
In the current case I think there were quality issues with the silk in that run. Mine arrived with a couple of very small but still visible holes (about the size of a large pin-prick, but that's large enough for the interlining to show), and after a couple of wearings the print is already fading a bit in the knot area.
My own observation is that the interlining just isn't up to the job. I think it has flattened out, and it wasn't at all substantial to start with. It's really too bad, as the ties themselves are lovely. I am somewhat alarmed to hear yours are fading, Ac.