I can only guess and ask - might it be a consequence of scarf design and colours?
Namely, I have noticed that certain scarves are stiffer and somehow more rigid in the beginning than the others...even same designs in different colour combos - again, it is my guessing only, not that I would try to justify the lower quality, as I have no experience with luxury-scarves and their scarf quality at all...
Certain years they produced scarves with more "sizing" which made them quite stiff. Mainly around the late '90s. It's not a quality issue, that's just how they were made. It still varies sometimes, but for at least the past five years + or so I haven't seen as much of a range of stiffness. But maybe she's talking about the vintage-style (very soft and fluid) silk, from a 70cm or pointu?