So, let me make sure I understand. Gentle wiping with a soft cloth will damage the blades, but dragging the blade across wire-tough whiskers is OK.
I think I will just continue to wipe my blades the same way I always have. I have not hurt one yet.
I was merely providing the correct answer to the question. I myself don't believe that wiping the blade makes too much of a difference, and although I don't do it every time, have had no problems the few times I do it.
As always, if it is working for you, keep at it. I was just trying to push aside the lawsuit speculation and provide an actual answer here.